BASELINE: Update Chromium to 106.0.5249.126

Change-Id: Ib0bb21c437a7d1686e21c33f2d329f2ac425b7ab
Reviewed-on: https://codereview.qt-project.org/c/qt/qtwebengine-chromium/+/438936
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

22 files changed, 153 insertions, 159 deletions

diff --git a/chromium/components/feature_engagement/OWNERS b/chromium/components/feature_engagement/OWNERS
index 354f99dd084..52ee6138617 100644
--- a/chromium/components/feature_engagement/OWNERS
+++ b/chromium/components/feature_engagement/OWNERS
@@ -2,6 +2,7 @@ dtrainor@chromium.org
 nyquist@chromium.org
 shaktisahu@chromium.org
 
+# For mobile platforms:
 per-file ...event_constants.*=twellington@chromium.org
 per-file ...feature_configurations.cc=twellington@chromium.org
 per-file ...feature_constants.*=twellington@chromium.org
@@ -9,3 +10,8 @@ per-file ...feature_list.*=twellington@chromium.org
 per-file ...EventConstants.java=twellington@chromium.org
 per-file ...FeatureConstants.java=twellington@chromium.org
 
+# For User Education/Feature Engagement on desktop platforms:
+per-file ...event_constants.*=dfried@chromium.org
+per-file ...feature_configurations.cc=dfried@chromium.org
+per-file ...feature_constants.*=dfried@chromium.org
+per-file ...feature_list.*=dfried@chromium.org
diff --git a/chromium/components/feature_engagement/internal/android/tracker_impl_android.h b/chromium/components/feature_engagement/internal/android/tracker_impl_android.h
index 9a686747acf..1400dd78740 100644
--- a/chromium/components/feature_engagement/internal/android/tracker_impl_android.h
+++ b/chromium/components/feature_engagement/internal/android/tracker_impl_android.h
@@ -12,16 +12,13 @@
 #include "base/android/callback_android.h"
 #include "base/android/jni_android.h"
 #include "base/android/scoped_java_ref.h"
+#include "base/feature_list.h"
 #include "base/memory/raw_ptr.h"
 #include "base/supports_user_data.h"
 #include "components/feature_engagement/internal/tracker_impl.h"
 #include "components/feature_engagement/public/feature_list.h"
 #include "components/feature_engagement/public/tracker.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 
 // JNI bridge between DisplayLockHandleAndroid in Java and C++.
diff --git a/chromium/components/feature_engagement/internal/availability_model.h b/chromium/components/feature_engagement/internal/availability_model.h
index da8870c1bec..2912bf1a5f8 100644
--- a/chromium/components/feature_engagement/internal/availability_model.h
+++ b/chromium/components/feature_engagement/internal/availability_model.h
@@ -8,12 +8,9 @@
 #include <stdint.h>
 
 #include "base/callback_forward.h"
+#include "base/feature_list.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 
 // An AvailabilityModel tracks when each feature was made available to an
diff --git a/chromium/components/feature_engagement/internal/availability_model_impl.h b/chromium/components/feature_engagement/internal/availability_model_impl.h
index fe96da41f90..607e04e94ce 100644
--- a/chromium/components/feature_engagement/internal/availability_model_impl.h
+++ b/chromium/components/feature_engagement/internal/availability_model_impl.h
@@ -12,14 +12,11 @@
 #include <string>
 
 #include "base/callback.h"
+#include "base/feature_list.h"
 #include "base/memory/weak_ptr.h"
 #include "components/feature_engagement/internal/availability_model.h"
 #include "components/feature_engagement/internal/persistent_availability_store.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 // An AvailabilityModel which supports loading data from an
 // PersistentAvailabilityStore.
diff --git a/chromium/components/feature_engagement/internal/chrome_variations_configuration.h b/chromium/components/feature_engagement/internal/chrome_variations_configuration.h
index 4406bca5e69..989fdec36bb 100644
--- a/chromium/components/feature_engagement/internal/chrome_variations_configuration.h
+++ b/chromium/components/feature_engagement/internal/chrome_variations_configuration.h
@@ -5,13 +5,10 @@
 #ifndef COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_CHROME_VARIATIONS_CONFIGURATION_H_
 #define COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_CHROME_VARIATIONS_CONFIGURATION_H_
 
+#include "base/feature_list.h"
 #include "components/feature_engagement/public/configuration.h"
 #include "components/feature_engagement/public/feature_list.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 
 // A ChromeVariationsConfiguration provides a configuration that is parsed from
diff --git a/chromium/components/feature_engagement/internal/condition_validator.h b/chromium/components/feature_engagement/internal/condition_validator.h
index facd64dc12a..34ff47ae571 100644
--- a/chromium/components/feature_engagement/internal/condition_validator.h
+++ b/chromium/components/feature_engagement/internal/condition_validator.h
@@ -11,14 +11,11 @@
 #include <string>
 #include <vector>
 
+#include "base/feature_list.h"
 #include "components/feature_engagement/public/configuration.h"
 #include "components/feature_engagement/public/feature_list.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 struct FeatureConfig;
 class AvailabilityModel;
diff --git a/chromium/components/feature_engagement/internal/editable_configuration.h b/chromium/components/feature_engagement/internal/editable_configuration.h
index ede2531f121..1b7bd9fd023 100644
--- a/chromium/components/feature_engagement/internal/editable_configuration.h
+++ b/chromium/components/feature_engagement/internal/editable_configuration.h
@@ -5,12 +5,9 @@
 #ifndef COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_EDITABLE_CONFIGURATION_H_
 #define COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_EDITABLE_CONFIGURATION_H_
 
+#include "base/feature_list.h"
 #include "components/feature_engagement/public/configuration.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 
 // An EditableConfiguration provides a configuration that can be configured
diff --git a/chromium/components/feature_engagement/internal/never_availability_model.cc b/chromium/components/feature_engagement/internal/never_availability_model.cc
index dc8c5b0e6f1..f71297faa63 100644
--- a/chromium/components/feature_engagement/internal/never_availability_model.cc
+++ b/chromium/components/feature_engagement/internal/never_availability_model.cc
@@ -15,7 +15,7 @@
 
 namespace feature_engagement {
 
-NeverAvailabilityModel::NeverAvailabilityModel() : ready_(false) {}
+NeverAvailabilityModel::NeverAvailabilityModel() = default;
 
 NeverAvailabilityModel::~NeverAvailabilityModel() = default;
 
@@ -24,7 +24,7 @@ void NeverAvailabilityModel::Initialize(OnInitializedCallback callback,
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::BindOnce(&NeverAvailabilityModel::ForwardedOnInitializedCallback,
-                     base::Unretained(this), std::move(callback)));
+                     weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
 }
 
 bool NeverAvailabilityModel::IsReady() const {
diff --git a/chromium/components/feature_engagement/internal/never_availability_model.h b/chromium/components/feature_engagement/internal/never_availability_model.h
index 3d4c8f8f95e..fff9f88d9ad 100644
--- a/chromium/components/feature_engagement/internal/never_availability_model.h
+++ b/chromium/components/feature_engagement/internal/never_availability_model.h
@@ -7,6 +7,7 @@
 
 #include <stdint.h>
 
+#include "base/memory/weak_ptr.h"
 #include "components/feature_engagement/internal/availability_model.h"
 
 namespace feature_engagement {
@@ -36,7 +37,9 @@ class NeverAvailabilityModel : public AvailabilityModel {
   void ForwardedOnInitializedCallback(OnInitializedCallback callback);
 
   // Whether the model has been successfully initialized.
-  bool ready_;
+  bool ready_ = false;
+
+  base::WeakPtrFactory<NeverAvailabilityModel> weak_ptr_factory_{this};
 };
 
 }  // namespace feature_engagement
diff --git a/chromium/components/feature_engagement/internal/never_availability_model_unittest.cc b/chromium/components/feature_engagement/internal/never_availability_model_unittest.cc
index e3fce69a0cb..982a8f376e4 100644
--- a/chromium/components/feature_engagement/internal/never_availability_model_unittest.cc
+++ b/chromium/components/feature_engagement/internal/never_availability_model_unittest.cc
@@ -22,7 +22,8 @@ const base::Feature kAvailabilityTestFeatureBar{
 
 class NeverAvailabilityModelTest : public ::testing::Test {
  public:
-  NeverAvailabilityModelTest() = default;
+  NeverAvailabilityModelTest()
+      : availability_model_(std::make_unique<NeverAvailabilityModel>()) {}
 
   NeverAvailabilityModelTest(const NeverAvailabilityModelTest&) = delete;
   NeverAvailabilityModelTest& operator=(const NeverAvailabilityModelTest&) =
@@ -31,7 +32,7 @@ class NeverAvailabilityModelTest : public ::testing::Test {
   void OnInitializedCallback(bool success) { success_ = success; }
 
  protected:
-  NeverAvailabilityModel availability_model_;
+  std::unique_ptr<NeverAvailabilityModel> availability_model_;
   absl::optional<bool> success_;
 
  private:
@@ -42,34 +43,47 @@ class NeverAvailabilityModelTest : public ::testing::Test {
 
 TEST_F(NeverAvailabilityModelTest, ShouldNeverHaveData) {
   EXPECT_EQ(absl::nullopt,
-            availability_model_.GetAvailability(kAvailabilityTestFeatureFoo));
+            availability_model_->GetAvailability(kAvailabilityTestFeatureFoo));
   EXPECT_EQ(absl::nullopt,
-            availability_model_.GetAvailability(kAvailabilityTestFeatureBar));
+            availability_model_->GetAvailability(kAvailabilityTestFeatureBar));
 
-  availability_model_.Initialize(
+  availability_model_->Initialize(
       base::BindOnce(&NeverAvailabilityModelTest::OnInitializedCallback,
                      base::Unretained(this)),
       14u);
   base::RunLoop().RunUntilIdle();
 
   EXPECT_EQ(absl::nullopt,
-            availability_model_.GetAvailability(kAvailabilityTestFeatureFoo));
+            availability_model_->GetAvailability(kAvailabilityTestFeatureFoo));
   EXPECT_EQ(absl::nullopt,
-            availability_model_.GetAvailability(kAvailabilityTestFeatureBar));
+            availability_model_->GetAvailability(kAvailabilityTestFeatureBar));
 }
 
 TEST_F(NeverAvailabilityModelTest, ShouldBeReadyAfterInitialization) {
-  EXPECT_FALSE(availability_model_.IsReady());
-  availability_model_.Initialize(
+  EXPECT_FALSE(availability_model_->IsReady());
+  availability_model_->Initialize(
       base::BindOnce(&NeverAvailabilityModelTest::OnInitializedCallback,
                      base::Unretained(this)),
       14u);
-  EXPECT_FALSE(availability_model_.IsReady());
+  EXPECT_FALSE(availability_model_->IsReady());
   EXPECT_FALSE(success_.has_value());
   base::RunLoop().RunUntilIdle();
-  EXPECT_TRUE(availability_model_.IsReady());
+  EXPECT_TRUE(availability_model_->IsReady());
   ASSERT_TRUE(success_.has_value());
   EXPECT_TRUE(success_.value());
 }
 
+TEST_F(NeverAvailabilityModelTest, DestroyedBeforeInitialization) {
+  EXPECT_FALSE(availability_model_->IsReady());
+  // Initialize performs asynchronous tasks that are posted to the task queue.
+  // However the class may be torn down before they have a chance to complete.
+  availability_model_->Initialize(
+      base::BindOnce(&NeverAvailabilityModelTest::OnInitializedCallback,
+                     base::Unretained(this)),
+      14u);
+  availability_model_.reset();
+  base::RunLoop().RunUntilIdle();
+  ASSERT_FALSE(success_.has_value());
+}
+
 }  // namespace feature_engagement
diff --git a/chromium/components/feature_engagement/internal/never_condition_validator.h b/chromium/components/feature_engagement/internal/never_condition_validator.h
index b5f6c15a621..21e04698b7c 100644
--- a/chromium/components/feature_engagement/internal/never_condition_validator.h
+++ b/chromium/components/feature_engagement/internal/never_condition_validator.h
@@ -5,14 +5,11 @@
 #ifndef COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_NEVER_CONDITION_VALIDATOR_H_
 #define COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_NEVER_CONDITION_VALIDATOR_H_
 
+#include "base/feature_list.h"
 #include "components/feature_engagement/internal/condition_validator.h"
 #include "components/feature_engagement/public/feature_list.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 class AvailabilityModel;
 class DisplayLockController;
diff --git a/chromium/components/feature_engagement/internal/once_condition_validator.h b/chromium/components/feature_engagement/internal/once_condition_validator.h
index aa8791f8fc0..b337e4dafa3 100644
--- a/chromium/components/feature_engagement/internal/once_condition_validator.h
+++ b/chromium/components/feature_engagement/internal/once_condition_validator.h
@@ -7,14 +7,11 @@
 
 #include <unordered_set>
 
+#include "base/feature_list.h"
 #include "components/feature_engagement/internal/condition_validator.h"
 #include "components/feature_engagement/public/feature_list.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 class AvailabilityModel;
 class DisplayLockController;
diff --git a/chromium/components/feature_engagement/internal/single_invalid_configuration.h b/chromium/components/feature_engagement/internal/single_invalid_configuration.h
index f55ad4d3d73..c0a1fc2fbee 100644
--- a/chromium/components/feature_engagement/internal/single_invalid_configuration.h
+++ b/chromium/components/feature_engagement/internal/single_invalid_configuration.h
@@ -8,12 +8,9 @@
 #include <string>
 #include <unordered_set>
 
+#include "base/feature_list.h"
 #include "components/feature_engagement/public/configuration.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 
 // An Configuration that always returns the same single invalid configuration,
diff --git a/chromium/components/feature_engagement/public/configuration.h b/chromium/components/feature_engagement/public/configuration.h
index 9692303bf07..e73c7c64196 100644
--- a/chromium/components/feature_engagement/public/configuration.h
+++ b/chromium/components/feature_engagement/public/configuration.h
@@ -11,12 +11,9 @@
 #include <string>
 #include <vector>
 
+#include "base/feature_list.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 
-namespace base {
-struct Feature;
-}
-
 namespace feature_engagement {
 
 // A ComparatorType describes the relationship between two numbers.
diff --git a/chromium/components/feature_engagement/public/event_constants.cc b/chromium/components/feature_engagement/public/event_constants.cc
index 94bc287358e..9d6bad7bd70 100644
--- a/chromium/components/feature_engagement/public/event_constants.cc
+++ b/chromium/components/feature_engagement/public/event_constants.cc
@@ -29,6 +29,7 @@ const char kGlobalMediaControlsOpened[] = "global_media_controls_opened";
 const char kFocusModeOpened[] = "focus_mode_opened";
 const char kFocusModeConditionsMet[] = "focus_mode_conditions_met";
 
+const char kSideSearchAutoTriggered[] = "side_search_auto_triggered";
 const char kSideSearchOpened[] = "side_search_opened";
 
 const char kTabSearchOpened[] = "tab_search_opened";
@@ -59,6 +60,8 @@ const char kDesktopVersionRequested[] = "desktop_version_requested";
 const char kDefaultSiteViewShown[] = "default_site_view_shown";
 const char kPasswordSuggestionsShown[] = "password_suggestions_shown";
 const char kPasswordSuggestionSelected[] = "password_suggestion_selected";
+const char kOverflowMenuNoHorizontalScrollOrAction[] =
+    "overflow_menu_no_horizontal_scroll_or_action";
 #endif  // BUILDFLAG(IS_IOS)
 
 #if BUILDFLAG(IS_ANDROID)
diff --git a/chromium/components/feature_engagement/public/event_constants.h b/chromium/components/feature_engagement/public/event_constants.h
index c7a23e83729..e69d4e8e26e 100644
--- a/chromium/components/feature_engagement/public/event_constants.h
+++ b/chromium/components/feature_engagement/public/event_constants.h
@@ -51,6 +51,8 @@ extern const char kFocusModeOpened[];
 // All conditions for show Focus Mode IPH were met.
 extern const char kFocusModeConditionsMet[];
 
+// The side search panel was automatically triggered.
+extern const char kSideSearchAutoTriggered[];
 // The Side search panel was opened by the user.
 extern const char kSideSearchOpened[];
 
@@ -109,6 +111,10 @@ extern const char kPasswordSuggestionsShown[];
 // The user has selected an Autofill password suggestion.
 extern const char kPasswordSuggestionSelected[];
 
+// The user has exited the overflow menu without scrolling horizontally and
+// without taking an action.
+extern const char kOverflowMenuNoHorizontalScrollOrAction[];
+
 #endif  // BUILDFLAG(IS_IOS)
 
 // Android.
diff --git a/chromium/components/feature_engagement/public/feature_configurations.cc b/chromium/components/feature_engagement/public/feature_configurations.cc
index 5af929179d5..ab84cf339a8 100644
--- a/chromium/components/feature_engagement/public/feature_configurations.cc
+++ b/chromium/components/feature_engagement/public/feature_configurations.cc
@@ -231,37 +231,38 @@ absl::optional<FeatureConfig> GetClientSideFeatureConfig(
                     Comparator(LESS_THAN, 3), 90, 360));
     return config;
   }
-  if (kIPHAddToHomescreenMessageFeature.name == feature->name) {
-    // A config that allows the Add to homescreen message IPH to be shown:
-    // * Once per 15 days
-    // * Up to 2 times but only if unused in the last 15 days.
+  if (kIPHContextualPageActionsPriceTrackingActionChipFeature.name ==
+      feature->name) {
+    // A config that allows the Price Tracking Action Chip to be shown:
+    // * 3 times per session.
+    // * 5 times per day.
+    // * 10 times per week.
     absl::optional<FeatureConfig> config = FeatureConfig();
     config->valid = true;
     config->availability = Comparator(ANY, 0);
-    config->session_rate = Comparator(EQUAL, 0);
-    config->trigger = EventConfig("add_to_homescreen_message_iph_trigger",
-                                  Comparator(LESS_THAN, 2), 90, 90);
-    config->used = EventConfig("add_to_homescreen_dialog_shown",
-                               Comparator(EQUAL, 0), 90, 90);
+    config->session_rate = Comparator(LESS_THAN, 3);
+    config->trigger = EventConfig(
+        "contextual_page_actions_price_tracking_action_chip_iph_trigger",
+        Comparator(LESS_THAN, 5), 1, 360);
     config->event_configs.insert(EventConfig(
-        "add_to_homescreen_message_iph_trigger", Comparator(EQUAL, 0), 15, 90));
+        "contextual_page_actions_price_tracking_action_chip_iph_trigger",
+        Comparator(LESS_THAN, 10), 7, 360));
     return config;
   }
-  if (kIPHAddToHomescreenTextBubbleFeature.name == feature->name) {
-    // A config that allows the Add to homescreen text bubble IPH to be shown:
+  if (kIPHAddToHomescreenMessageFeature.name == feature->name) {
+    // A config that allows the Add to homescreen message IPH to be shown:
     // * Once per 15 days
     // * Up to 2 times but only if unused in the last 15 days.
     absl::optional<FeatureConfig> config = FeatureConfig();
     config->valid = true;
     config->availability = Comparator(ANY, 0);
     config->session_rate = Comparator(EQUAL, 0);
-    config->trigger = EventConfig("add_to_homescreen_text_bubble_iph_trigger",
+    config->trigger = EventConfig("add_to_homescreen_message_iph_trigger",
                                   Comparator(LESS_THAN, 2), 90, 90);
     config->used = EventConfig("add_to_homescreen_dialog_shown",
                                Comparator(EQUAL, 0), 90, 90);
-    config->event_configs.insert(
-        EventConfig("add_to_homescreen_text_bubble_iph_trigger",
-                    Comparator(EQUAL, 0), 15, 90));
+    config->event_configs.insert(EventConfig(
+        "add_to_homescreen_message_iph_trigger", Comparator(EQUAL, 0), 15, 90));
     return config;
   }
 
@@ -516,6 +517,25 @@ absl::optional<FeatureConfig> GetClientSideFeatureConfig(
                                              Comparator(EQUAL, 0), 15, 90));
     return config;
   }
+  if (kIPHShoppingListMenuItemFeature.name == feature->name) {
+    // Allows a shopping list menu item IPH to be displayed at most:
+    // * Once per week.
+    // * Up to 3 times per year.
+    // * And only as long as the user has never initiated price tracking from
+    // the menu.
+    absl::optional<FeatureConfig> config = FeatureConfig();
+    config->valid = true;
+    config->availability = Comparator(ANY, 0);
+    config->session_rate = Comparator(EQUAL, 1);
+    config->trigger = EventConfig("shopping_list_menu_item_iph_triggered",
+                                  Comparator(EQUAL, 0), 7, 7);
+    config->event_configs.insert(
+        EventConfig("shopping_list_menu_item_iph_triggered",
+                    Comparator(LESS_THAN, 3), 360, 360));
+    config->used = EventConfig("shopping_list_track_price_from_menu",
+                               Comparator(EQUAL, 0), 360, 360);
+    return config;
+  }
   if (kIPHTabSwitcherButtonFeature.name == feature->name) {
     absl::optional<FeatureConfig> config = FeatureConfig();
     config->valid = true;
@@ -698,28 +718,6 @@ absl::optional<FeatureConfig> GetClientSideFeatureConfig(
     return config;
   }
 
-  if (kIPHStartSurfaceTabSwitcherHomeButton.name == feature->name) {
-    // A config that allows the StartSurfaceTabSwitcherHomeButton IPH to be
-    // shown:
-    // * Once per day
-    // * Up to 7 times but only if the home button is not clicked when IPH is
-    // showing.
-    absl::optional<FeatureConfig> config = FeatureConfig();
-    config->valid = true;
-    config->availability = Comparator(ANY, 0);
-    config->session_rate = Comparator(ANY, 0);
-    config->trigger =
-        EventConfig("start_surface_tab_switcher_home_button_iph_trigger",
-                    Comparator(LESS_THAN, 7), k10YearsInDays, k10YearsInDays);
-    config->used =
-        EventConfig("start_surface_tab_switcher_home_button_clicked",
-                    Comparator(EQUAL, 0), k10YearsInDays, k10YearsInDays);
-    config->event_configs.insert(
-        EventConfig("start_surface_tab_switcher_home_button_iph_trigger",
-                    Comparator(EQUAL, 0), 1, 360));
-    return config;
-  }
-
   if (kIPHSharedHighlightingReceiverFeature.name == feature->name) {
     // A config that allows the shared highlighting message IPH to be shown
     // when a user receives a highlight:
@@ -886,6 +884,23 @@ absl::optional<FeatureConfig> GetClientSideFeatureConfig(
                                Comparator(EQUAL, 0), 60, 60);
     return config;
   }
+
+  if (kIPHRequestDesktopSiteAppMenuFeature.name == feature->name) {
+    // A config that allows the RDS site-level setting user education prompt to
+    // be shown:
+    // * If the user has used the RDS (tab-level) setting on the app menu at
+    // least once.
+    // * If the prompt has never been shown before.
+    absl::optional<FeatureConfig> config = FeatureConfig();
+    config->valid = true;
+    config->availability = Comparator(ANY, 0);
+    config->session_rate = Comparator(ANY, 0);
+    config->used = EventConfig("app_menu_desktop_site_for_tab_clicked",
+                               Comparator(GREATER_THAN_OR_EQUAL, 1), 180, 180);
+    config->trigger = EventConfig("request_desktop_site_app_menu_iph_trigger",
+                                  Comparator(EQUAL, 0), 180, 180);
+    return config;
+  }
 #endif  // BUILDFLAG(IS_ANDROID)
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) || \
diff --git a/chromium/components/feature_engagement/public/feature_configurations.h b/chromium/components/feature_engagement/public/feature_configurations.h
index fe119a55216..f81910918f6 100644
--- a/chromium/components/feature_engagement/public/feature_configurations.h
+++ b/chromium/components/feature_engagement/public/feature_configurations.h
@@ -5,12 +5,9 @@
 #ifndef COMPONENTS_FEATURE_ENGAGEMENT_PUBLIC_FEATURE_CONFIGURATIONS_H_
 #define COMPONENTS_FEATURE_ENGAGEMENT_PUBLIC_FEATURE_CONFIGURATIONS_H_
 
+#include "base/feature_list.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 
-namespace base {
-struct Feature;
-}  // namespace base
-
 namespace feature_engagement {
 struct FeatureConfig;
 
diff --git a/chromium/components/feature_engagement/public/feature_constants.cc b/chromium/components/feature_engagement/public/feature_constants.cc
index d0a13bec40e..e31968e4bfa 100644
--- a/chromium/components/feature_engagement/public/feature_constants.cc
+++ b/chromium/components/feature_engagement/public/feature_constants.cc
@@ -4,6 +4,7 @@
 
 #include "components/feature_engagement/public/feature_constants.h"
 
+#include "base/feature_list.h"
 #include "build/build_config.h"
 
 namespace feature_engagement {
@@ -46,6 +47,8 @@ const base::Feature kIPHReadingListInSidePanelFeature{
     "IPH_ReadingListInSidePanel", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHReopenTabFeature{"IPH_ReopenTab",
                                          base::FEATURE_DISABLED_BY_DEFAULT};
+const base::Feature kIPHSideSearchAutoTriggeringFeature{
+    "IPH_SideSearchAutoTriggering", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHSideSearchFeature{"IPH_SideSearch",
                                           base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHTabSearchFeature{"IPH_TabSearch",
@@ -60,6 +63,9 @@ const base::Feature kIPHProfileSwitchFeature{"IPH_ProfileSwitch",
                                              base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kIPHIntentChipFeature{"IPH_IntentChip",
                                           base::FEATURE_DISABLED_BY_DEFAULT};
+const base::Feature kIPHWebUiHelpBubbleTestFeature(
+    "IPH_WebUiHelpBubbleTest",
+    base::FEATURE_DISABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) ||
         // BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
 
@@ -76,8 +82,6 @@ const base::Feature
         base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHAddToHomescreenMessageFeature{
     "IPH_AddToHomescreenMessage", base::FEATURE_ENABLED_BY_DEFAULT};
-const base::Feature kIPHAddToHomescreenTextBubbleFeature{
-    "IPH_AddToHomescreenTextBubble", base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kIPHAutoDarkOptOutFeature{"IPH_AutoDarkOptOut",
                                               base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kIPHAutoDarkUserEducationMessageFeature{
@@ -87,6 +91,9 @@ const base::Feature kIPHAutoDarkUserEducationMessageOptInFeature{
 const base::Feature kIPHContextualPageActionsPriceTrackingFeature{
     "IPH_ContextualPageActions_PriceTracking",
     base::FEATURE_ENABLED_BY_DEFAULT};
+const base::Feature kIPHContextualPageActionsPriceTrackingActionChipFeature{
+    "IPH_ContextualPageActions_PriceTrackingActionChip",
+    base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kIPHCrowFeature{"IPH_Crow",
                                     base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHDataSaverDetailFeature{
@@ -107,21 +114,6 @@ const base::Feature kIPHChromeHomeExpandFeature{
     "IPH_ChromeHomeExpand", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHChromeHomePullToRefreshFeature{
     "IPH_ChromeHomePullToRefresh", base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kIPHContextualSearchTranslationEnableFeature{
-    "IPH_ContextualSearchTranslationEnable", base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kIPHContextualSearchWebSearchFeature{
-    "IPH_ContextualSearchWebSearch", base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kIPHContextualSearchPromoteTapFeature{
-    "IPH_ContextualSearchPromoteTap", base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kIPHContextualSearchPromotePanelOpenFeature{
-    "IPH_ContextualSearchPromotePanelOpen", base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kIPHContextualSearchOptInFeature{
-    "IPH_ContextualSearchOptIn", base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kIPHContextualSearchTappedButShouldLongpressFeature{
-    "IPH_ContextualSearchTappedButShouldLongpress",
-    base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kIPHContextualSearchInPanelHelpFeature{
-    "IPH_ContextualSearchInPanelHelp", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHDownloadSettingsFeature{
     "IPH_DownloadSettings", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHDownloadInfoBarDownloadContinuingFeature{
@@ -138,6 +130,8 @@ const base::Feature kIPHReadLaterAppMenuBookmarksFeature{
     "IPH_ReadLaterAppMenuBookmarks", base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kIPHReadLaterBottomSheetFeature{
     "IPH_ReadLaterBottomSheet", base::FEATURE_ENABLED_BY_DEFAULT};
+const base::Feature kIPHRequestDesktopSiteAppMenuFeature{
+    "IPH_RequestDesktopSiteAppMenu", base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kIPHShoppingListSaveFlowFeature{
     "IPH_ShoppingListSaveFlow", base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kIPHEphemeralTabFeature{"IPH_EphemeralTab",
@@ -213,6 +207,8 @@ const base::Feature kIPHPageInfoStoreInfoFeature{
     "IPH_PageInfoStoreInfo", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHPreviewsOmniboxUIFeature{
     "IPH_PreviewsOmniboxUI", base::FEATURE_ENABLED_BY_DEFAULT};
+const base::Feature kIPHPriceDropNTPFeature{"IPH_PriceDropNTP",
+                                            base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHShoppingListMenuItemFeature{
     "IPH_ShoppingListMenuItem", base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kIPHTabGroupsQuicklyComparePagesFeature{
@@ -267,8 +263,6 @@ const base::Feature kIPHSharedHighlightingBuilder{
     "IPH_SharedHighlightingBuilder", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHSharedHighlightingReceiverFeature{
     "IPH_SharedHighlightingReceiver", base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kIPHStartSurfaceTabSwitcherHomeButton{
-    "IPH_StartSurfaceTabSwitcherHomeButton", base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kIPHSharingHubWebnotesStylizeFeature{
     "IPH_SharingHubWebnotesStylize", base::FEATURE_ENABLED_BY_DEFAULT};
 #endif  // BUILDFLAG(IS_ANDROID)
@@ -296,6 +290,8 @@ const base::Feature kIPHPasswordSuggestionsFeature{
     "IPH_PasswordSuggestions", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHFollowWhileBrowsingFeature{
     "IPH_FollowWhileBrowsing", base::FEATURE_DISABLED_BY_DEFAULT};
+const base::Feature kIPHOverflowMenuTipFeature{
+    "IPH_OverflowMenuTip", base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // BUILDFLAG(IS_IOS)
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) || \
diff --git a/chromium/components/feature_engagement/public/feature_constants.h b/chromium/components/feature_engagement/public/feature_constants.h
index 6dc3e390fe9..1e177c4cefd 100644
--- a/chromium/components/feature_engagement/public/feature_constants.h
+++ b/chromium/components/feature_engagement/public/feature_constants.h
@@ -45,12 +45,14 @@ extern const base::Feature kIPHReadingListEntryPointFeature;
 extern const base::Feature kIPHIntentChipFeature;
 extern const base::Feature kIPHReadingListInSidePanelFeature;
 extern const base::Feature kIPHReopenTabFeature;
+extern const base::Feature kIPHSideSearchAutoTriggeringFeature;
 extern const base::Feature kIPHSideSearchFeature;
 extern const base::Feature kIPHTabSearchFeature;
 extern const base::Feature kIPHWebUITabStripFeature;
 extern const base::Feature kIPHDesktopSnoozeFeature;
 extern const base::Feature kIPHDesktopPwaInstallFeature;
 extern const base::Feature kIPHProfileSwitchFeature;
+extern const base::Feature kIPHWebUiHelpBubbleTestFeature;
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) ||
         // BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
 
@@ -65,11 +67,12 @@ extern const base::Feature
 extern const base::Feature
     kIPHAdaptiveButtonInTopToolbarCustomizationVoiceSearchFeature;
 extern const base::Feature kIPHAddToHomescreenMessageFeature;
-extern const base::Feature kIPHAddToHomescreenTextBubbleFeature;
 extern const base::Feature kIPHAutoDarkOptOutFeature;
 extern const base::Feature kIPHAutoDarkUserEducationMessageFeature;
 extern const base::Feature kIPHAutoDarkUserEducationMessageOptInFeature;
 extern const base::Feature kIPHContextualPageActionsPriceTrackingFeature;
+extern const base::Feature
+    kIPHContextualPageActionsPriceTrackingActionChipFeature;
 extern const base::Feature kIPHCrowFeature;
 extern const base::Feature kIPHDataSaverDetailFeature;
 extern const base::Feature kIPHDataSaverMilestonePromoFeature;
@@ -80,13 +83,6 @@ extern const base::Feature kIPHDownloadPageFeature;
 extern const base::Feature kIPHDownloadPageScreenshotFeature;
 extern const base::Feature kIPHChromeHomeExpandFeature;
 extern const base::Feature kIPHChromeHomePullToRefreshFeature;
-extern const base::Feature kIPHContextualSearchTranslationEnableFeature;
-extern const base::Feature kIPHContextualSearchWebSearchFeature;
-extern const base::Feature kIPHContextualSearchPromoteTapFeature;
-extern const base::Feature kIPHContextualSearchPromotePanelOpenFeature;
-extern const base::Feature kIPHContextualSearchOptInFeature;
-extern const base::Feature kIPHContextualSearchTappedButShouldLongpressFeature;
-extern const base::Feature kIPHContextualSearchInPanelHelpFeature;
 extern const base::Feature kIPHDownloadSettingsFeature;
 extern const base::Feature kIPHDownloadInfoBarDownloadContinuingFeature;
 extern const base::Feature kIPHDownloadInfoBarDownloadsAreFasterFeature;
@@ -129,11 +125,13 @@ extern const base::Feature kIPHNewTabPageHomeButtonFeature;
 extern const base::Feature kIPHPageInfoFeature;
 extern const base::Feature kIPHPageInfoStoreInfoFeature;
 extern const base::Feature kIPHPreviewsOmniboxUIFeature;
+extern const base::Feature kIPHPriceDropNTPFeature;
 extern const base::Feature kIPHQuietNotificationPromptsFeature;
 extern const base::Feature kIPHReadLaterContextMenuFeature;
 extern const base::Feature kIPHReadLaterAppMenuBookmarkThisPageFeature;
 extern const base::Feature kIPHReadLaterAppMenuBookmarksFeature;
 extern const base::Feature kIPHReadLaterBottomSheetFeature;
+extern const base::Feature kIPHRequestDesktopSiteAppMenuFeature;
 extern const base::Feature kIPHShoppingListMenuItemFeature;
 extern const base::Feature kIPHShoppingListSaveFlowFeature;
 extern const base::Feature kIPHTabGroupsQuicklyComparePagesFeature;
@@ -162,7 +160,6 @@ extern const base::Feature kIPHWebFeedFollowFeature;
 extern const base::Feature kIPHWebFeedPostFollowDialogFeature;
 extern const base::Feature kIPHSharedHighlightingBuilder;
 extern const base::Feature kIPHSharedHighlightingReceiverFeature;
-extern const base::Feature kIPHStartSurfaceTabSwitcherHomeButton;
 extern const base::Feature kIPHSharingHubWebnotesStylizeFeature;
 #endif  // BUILDFLAG(IS_ANDROID)
 
@@ -178,6 +175,7 @@ extern const base::Feature kIPHDiscoverFeedHeaderFeature;
 extern const base::Feature kIPHDefaultSiteViewFeature;
 extern const base::Feature kIPHPasswordSuggestionsFeature;
 extern const base::Feature kIPHFollowWhileBrowsingFeature;
+extern const base::Feature kIPHOverflowMenuTipFeature;
 #endif  // BUILDFLAG(IS_IOS)
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) || \
diff --git a/chromium/components/feature_engagement/public/feature_list.cc b/chromium/components/feature_engagement/public/feature_list.cc
index ab905b12f67..52f48cbfeb7 100644
--- a/chromium/components/feature_engagement/public/feature_list.cc
+++ b/chromium/components/feature_engagement/public/feature_list.cc
@@ -20,7 +20,6 @@ const base::Feature* const kAllFeatures[] = {
     &kIPHAdaptiveButtonInTopToolbarCustomizationShareFeature,
     &kIPHAdaptiveButtonInTopToolbarCustomizationVoiceSearchFeature,
     &kIPHAddToHomescreenMessageFeature,
-    &kIPHAddToHomescreenTextBubbleFeature,
     &kIPHAutoDarkOptOutFeature,
     &kIPHAutoDarkUserEducationMessageFeature,
     &kIPHAutoDarkUserEducationMessageOptInFeature,
@@ -37,13 +36,7 @@ const base::Feature* const kAllFeatures[] = {
     &kIPHChromeReengagementNotification2Feature,
     &kIPHChromeReengagementNotification3Feature,
     &kIPHContextualPageActionsPriceTrackingFeature,
-    &kIPHContextualSearchTranslationEnableFeature,
-    &kIPHContextualSearchWebSearchFeature,
-    &kIPHContextualSearchPromoteTapFeature,
-    &kIPHContextualSearchPromotePanelOpenFeature,
-    &kIPHContextualSearchOptInFeature,
-    &kIPHContextualSearchTappedButShouldLongpressFeature,
-    &kIPHContextualSearchInPanelHelpFeature,
+    &kIPHContextualPageActionsPriceTrackingActionChipFeature,
     &kIPHCrowFeature,
     &kIPHDownloadSettingsFeature,
     &kIPHDownloadInfoBarDownloadContinuingFeature,
@@ -76,12 +69,14 @@ const base::Feature* const kAllFeatures[] = {
     &kIPHPageInfoFeature,
     &kIPHPageInfoStoreInfoFeature,
     &kIPHPreviewsOmniboxUIFeature,
+    &kIPHPriceDropNTPFeature,
     &kIPHPwaInstallAvailableFeature,
     &kIPHQuietNotificationPromptsFeature,
     &kIPHReadLaterContextMenuFeature,
     &kIPHReadLaterAppMenuBookmarkThisPageFeature,
     &kIPHReadLaterAppMenuBookmarksFeature,
     &kIPHReadLaterBottomSheetFeature,
+    &kIPHRequestDesktopSiteAppMenuFeature,
     &kIPHShoppingListMenuItemFeature,
     &kIPHShoppingListSaveFlowFeature,
     &kIPHTabGroupsQuicklyComparePagesFeature,
@@ -106,7 +101,6 @@ const base::Feature* const kAllFeatures[] = {
     &kIPHWebFeedPostFollowDialogFeature,
     &kIPHSharedHighlightingBuilder,
     &kIPHSharedHighlightingReceiverFeature,
-    &kIPHStartSurfaceTabSwitcherHomeButton,
     &kIPHSharingHubWebnotesStylizeFeature,
 #endif  // BUILDFLAG(IS_ANDROID)
 #if BUILDFLAG(IS_IOS)
@@ -121,6 +115,7 @@ const base::Feature* const kAllFeatures[] = {
     &kIPHDefaultSiteViewFeature,
     &kIPHPasswordSuggestionsFeature,
     &kIPHFollowWhileBrowsingFeature,
+    &kIPHOverflowMenuTipFeature,
 #endif  // BUILDFLAG(IS_IOS)
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) || \
     BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
@@ -134,6 +129,7 @@ const base::Feature* const kAllFeatures[] = {
     &kIPHReadingListEntryPointFeature,
     &kIPHReadingListInSidePanelFeature,
     &kIPHReopenTabFeature,
+    &kIPHSideSearchAutoTriggeringFeature,
     &kIPHSideSearchFeature,
     &kIPHTabSearchFeature,
     &kIPHWebUITabStripFeature,
@@ -141,6 +137,7 @@ const base::Feature* const kAllFeatures[] = {
     &kIPHProfileSwitchFeature,
     &kIPHDesktopSharedHighlightingFeature,
     &kIPHIntentChipFeature,
+    &kIPHWebUiHelpBubbleTestFeature,
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) ||
         // BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
 
diff --git a/chromium/components/feature_engagement/public/feature_list.h b/chromium/components/feature_engagement/public/feature_list.h
index 83105819f3c..0b9843167e2 100644
--- a/chromium/components/feature_engagement/public/feature_list.h
+++ b/chromium/components/feature_engagement/public/feature_list.h
@@ -54,8 +54,6 @@ DEFINE_VARIATION_PARAM(
     "IPH_AdaptiveButtonInTopToolbarCustomization_VoiceSearch");
 DEFINE_VARIATION_PARAM(kIPHAddToHomescreenMessageFeature,
                        "IPH_AddToHomescreenMessage");
-DEFINE_VARIATION_PARAM(kIPHAddToHomescreenTextBubbleFeature,
-                       "IPH_AddToHomescreenTextBubble");
 DEFINE_VARIATION_PARAM(kIPHAutoDarkOptOutFeature, "IPH_AutoDarkOptOut");
 DEFINE_VARIATION_PARAM(kIPHAutoDarkUserEducationMessageFeature,
                        "IPH_AutoDarkUserEducationMessage");
@@ -63,6 +61,8 @@ DEFINE_VARIATION_PARAM(kIPHAutoDarkUserEducationMessageOptInFeature,
                        "IPH_AutoDarkUserEducationMessageOptIn");
 DEFINE_VARIATION_PARAM(kIPHContextualPageActionsPriceTrackingFeature,
                        "IPH_ContextualPageActions_PriceTracking");
+DEFINE_VARIATION_PARAM(kIPHContextualPageActionsPriceTrackingActionChipFeature,
+                       "IPH_ContextualPageActions_PriceTrackingActionChip");
 DEFINE_VARIATION_PARAM(kIPHCrowFeature, "IPH_Crow");
 DEFINE_VARIATION_PARAM(kIPHDataSaverDetailFeature, "IPH_DataSaverDetail");
 DEFINE_VARIATION_PARAM(kIPHDataSaverMilestonePromoFeature,
@@ -82,20 +82,6 @@ DEFINE_VARIATION_PARAM(kIPHChromeReengagementNotification2Feature,
                        "IPH_ChromeReengagementNotification2");
 DEFINE_VARIATION_PARAM(kIPHChromeReengagementNotification3Feature,
                        "IPH_ChromeReengagementNotification3");
-DEFINE_VARIATION_PARAM(kIPHContextualSearchTranslationEnableFeature,
-                       "IPH_ContextualSearchTranslationEnable");
-DEFINE_VARIATION_PARAM(kIPHContextualSearchWebSearchFeature,
-                       "IPH_ContextualSearchWebSearch");
-DEFINE_VARIATION_PARAM(kIPHContextualSearchPromoteTapFeature,
-                       "IPH_ContextualSearchPromoteTap");
-DEFINE_VARIATION_PARAM(kIPHContextualSearchPromotePanelOpenFeature,
-                       "IPH_ContextualSearchPromotePanelOpen");
-DEFINE_VARIATION_PARAM(kIPHContextualSearchOptInFeature,
-                       "IPH_ContextualSearchOptIn");
-DEFINE_VARIATION_PARAM(kIPHContextualSearchTappedButShouldLongpressFeature,
-                       "IPH_ContextualSearchTappedButShouldLongpress");
-DEFINE_VARIATION_PARAM(kIPHContextualSearchInPanelHelpFeature,
-                       "IPH_ContextualSearchInPanelHelp");
 DEFINE_VARIATION_PARAM(kIPHDownloadSettingsFeature, "IPH_DownloadSettings");
 DEFINE_VARIATION_PARAM(kIPHDownloadInfoBarDownloadContinuingFeature,
                        "IPH_DownloadInfoBarDownloadContinuing");
@@ -149,6 +135,7 @@ DEFINE_VARIATION_PARAM(kIPHNewTabPageButtonFeature, "IPH_NewTabPageHomeButton");
 DEFINE_VARIATION_PARAM(kIPHPageInfoFeature, "IPH_PageInfo");
 DEFINE_VARIATION_PARAM(kIPHPageInfoStoreInfoFeature, "IPH_PageInfoStoreInfo");
 DEFINE_VARIATION_PARAM(kIPHPreviewsOmniboxUIFeature, "IPH_PreviewsOmniboxUI");
+DEFINE_VARIATION_PARAM(kIPHPriceDropNTPFeature, "IPH_PriceDropNTP");
 DEFINE_VARIATION_PARAM(kIPHPwaInstallAvailableFeature,
                        "IPH_PwaInstallAvailableFeature");
 DEFINE_VARIATION_PARAM(kIPHQuietNotificationPromptsFeature,
@@ -161,6 +148,8 @@ DEFINE_VARIATION_PARAM(kIPHReadLaterAppMenuBookmarksFeature,
                        "IPH_ReadLaterAppMenuBookmarks");
 DEFINE_VARIATION_PARAM(kIPHReadLaterBottomSheetFeature,
                        "IPH_ReadLaterBottomSheet");
+DEFINE_VARIATION_PARAM(kIPHRequestDesktopSiteAppMenuFeature,
+                       "IPH_RequestDesktopSiteAppMenu");
 DEFINE_VARIATION_PARAM(kIPHShoppingListMenuItemFeature,
                        "IPH_ShoppingListMenuItem");
 DEFINE_VARIATION_PARAM(kIPHShoppingListSaveFlowFeature,
@@ -202,8 +191,6 @@ DEFINE_VARIATION_PARAM(kIPHSharedHighlightingBuilder,
                        "IPH_SharedHighlightingBuilder");
 DEFINE_VARIATION_PARAM(kIPHSharedHighlightingReceiverFeature,
                        "IPH_SharedHighlightingReceiver");
-DEFINE_VARIATION_PARAM(kIPHStartSurfaceTabSwitcherHomeButton,
-                       "IPH_StartSurfaceTabSwitcherHomeButton");
 DEFINE_VARIATION_PARAM(kIPHSharingHubWebnotesStylizeFeature,
                        "IPH_SharingHubWebnotesStylize");
 #endif  // BUILDFLAG(IS_ANDROID)
@@ -225,6 +212,7 @@ DEFINE_VARIATION_PARAM(kIPHPasswordSuggestionsFeature,
                        "IPH_PasswordSuggestions");
 DEFINE_VARIATION_PARAM(kIPHFollowWhileBrowsingFeature,
                        "IPH_FollowWhileBrowsing");
+DEFINE_VARIATION_PARAM(kIPHOverflowMenuTipFeature, "IPH_OverflowMenuTip");
 #endif  // BUILDFLAG(IS_IOS)
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) || \
@@ -244,6 +232,8 @@ DEFINE_VARIATION_PARAM(kIPHReadingListEntryPointFeature,
 DEFINE_VARIATION_PARAM(kIPHReadingListInSidePanelFeature,
                        "IPH_ReadingListInSidePanel");
 DEFINE_VARIATION_PARAM(kIPHReopenTabFeature, "IPH_ReopenTab");
+DEFINE_VARIATION_PARAM(kIPHSideSearchAutoTriggeringFeature,
+                       "IPH_SideSearchAutoTriggering");
 DEFINE_VARIATION_PARAM(kIPHSideSearchFeature, "IPH_SideSearch");
 DEFINE_VARIATION_PARAM(kIPHTabAudioMutingFeature, "IPH_TabAudioMuting");
 DEFINE_VARIATION_PARAM(kIPHTabSearchFeature, "IPH_TabSearch");
@@ -253,6 +243,8 @@ DEFINE_VARIATION_PARAM(kIPHProfileSwitchFeature, "IPH_ProfileSwitch");
 DEFINE_VARIATION_PARAM(kIPHDesktopSharedHighlightingFeature,
                        "IPH_DesktopSharedHighlighting");
 DEFINE_VARIATION_PARAM(kIPHIntentChipFeature, "IPH_IntentChip");
+DEFINE_VARIATION_PARAM(kIPHWebUiHelpBubbleTestFeature,
+                       "IPH_WebUiHelpBubbleTest");
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) ||
         // BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
 
@@ -279,7 +271,6 @@ constexpr flags_ui::FeatureEntry::FeatureVariation
         VARIATION_ENTRY(
             kIPHAdaptiveButtonInTopToolbarCustomizationVoiceSearchFeature),
         VARIATION_ENTRY(kIPHAddToHomescreenMessageFeature),
-        VARIATION_ENTRY(kIPHAddToHomescreenTextBubbleFeature),
         VARIATION_ENTRY(kIPHAutoDarkOptOutFeature),
         VARIATION_ENTRY(kIPHAutoDarkUserEducationMessageFeature),
         VARIATION_ENTRY(kIPHAutoDarkUserEducationMessageOptInFeature),
@@ -297,13 +288,6 @@ constexpr flags_ui::FeatureEntry::FeatureVariation
         VARIATION_ENTRY(kIPHChromeReengagementNotification1Feature),
         VARIATION_ENTRY(kIPHChromeReengagementNotification2Feature),
         VARIATION_ENTRY(kIPHChromeReengagementNotification3Feature),
-        VARIATION_ENTRY(kIPHContextualSearchTranslationEnableFeature),
-        VARIATION_ENTRY(kIPHContextualSearchWebSearchFeature),
-        VARIATION_ENTRY(kIPHContextualSearchPromoteTapFeature),
-        VARIATION_ENTRY(kIPHContextualSearchPromotePanelOpenFeature),
-        VARIATION_ENTRY(kIPHContextualSearchOptInFeature),
-        VARIATION_ENTRY(kIPHContextualSearchTappedButShouldLongpressFeature),
-        VARIATION_ENTRY(kIPHContextualSearchInPanelHelpFeature),
         VARIATION_ENTRY(kIPHDownloadSettingsFeature),
         VARIATION_ENTRY(kIPHDownloadInfoBarDownloadContinuingFeature),
         VARIATION_ENTRY(kIPHDownloadInfoBarDownloadsAreFasterFeature),
@@ -321,12 +305,14 @@ constexpr flags_ui::FeatureEntry::FeatureVariation
         VARIATION_ENTRY(kIPHPageInfoFeature),
         VARIATION_ENTRY(kIPHPageInfoStoreInfoFeature),
         VARIATION_ENTRY(kIPHPreviewsOmniboxUIFeature),
+        VARIATION_ENTRY(kIPHPriceDropNTPFeature),
         VARIATION_ENTRY(kIPHPwaInstallAvailableFeature),
         VARIATION_ENTRY(kIPHQuietNotificationPromptsFeature),
         VARIATION_ENTRY(kIPHReadLaterContextMenuFeature),
         VARIATION_ENTRY(kIPHReadLaterAppMenuBookmarkThisPageFeature),
         VARIATION_ENTRY(kIPHReadLaterAppMenuBookmarksFeature),
         VARIATION_ENTRY(kIPHReadLaterBottomSheetFeature),
+        VARIATION_ENTRY(kIPHRequestDesktopSiteAppMenuFeature),
         VARIATION_ENTRY(kIPHShoppingListMenuItemFeature),
         VARIATION_ENTRY(kIPHShoppingListSaveFlowFeature),
         VARIATION_ENTRY(kIPHTabGroupsQuicklyComparePagesFeature),
@@ -363,6 +349,7 @@ constexpr flags_ui::FeatureEntry::FeatureVariation
         VARIATION_ENTRY(kIPHDefaultSiteViewFeature),
         VARIATION_ENTRY(kIPHPasswordSuggestionsFeature),
         VARIATION_ENTRY(kIPHFollowWhileBrowsingFeature),
+        VARIATION_ENTRY(kIPHOverflowMenuTipFeature),
 #elif BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX) || \
     BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
         VARIATION_ENTRY(kIPHDesktopTabGroupsNewGroupFeature),
@@ -375,6 +362,7 @@ constexpr flags_ui::FeatureEntry::FeatureVariation
         VARIATION_ENTRY(kIPHReadingListEntryPointFeature),
         VARIATION_ENTRY(kIPHReadingListInSidePanelFeature),
         VARIATION_ENTRY(kIPHReopenTabFeature),
+        VARIATION_ENTRY(kIPHSideSearchAutoTriggeringFeature),
         VARIATION_ENTRY(kIPHSideSearchFeature),
         VARIATION_ENTRY(kIPHTabAudioMutingFeature),
         VARIATION_ENTRY(kIPHTabSearchFeature),
@@ -383,6 +371,7 @@ constexpr flags_ui::FeatureEntry::FeatureVariation
         VARIATION_ENTRY(kIPHProfileSwitchFeature),
         VARIATION_ENTRY(kIPHDesktopSharedHighlightingFeature),
         VARIATION_ENTRY(kIPHIntentChipFeature),
+        VARIATION_ENTRY(kIPHWebUiHelpBubbleTestFeature),
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX) ||
         // BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)