1 files changed, 37 insertions, 0 deletions
diff --git a/chromium/components/feature_engagement_tracker/internal/once_condition_validator.cc b/chromium/components/feature_engagement_tracker/internal/once_condition_validator.cc
new file mode 100644
index 00000000000..1240766927b
--- /dev/null
+++ b/chromium/components/feature_engagement_tracker/internal/once_condition_validator.cc
@@ -0,0 +1,37 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/feature_engagement_tracker/internal/once_condition_validator.h"
+
+#include "base/feature_list.h"
+#include "components/feature_engagement_tracker/internal/configuration.h"
+#include "components/feature_engagement_tracker/internal/model.h"
+
+namespace feature_engagement_tracker {
+
+OnceConditionValidator::OnceConditionValidator() = default;
+
+OnceConditionValidator::~OnceConditionValidator() = default;
+
+bool OnceConditionValidator::MeetsConditions(const base::Feature& feature,
+                                             const Model& model) {
+  if (!model.IsReady())
+    return false;
+
+  if (model.IsCurrentlyShowing())
+    return false;
+
+  const FeatureConfig& config = model.GetFeatureConfig(feature);
+  if (!config.valid)
+    return false;
+
+  if (shown_features_.find(&feature) == shown_features_.end()) {
+    shown_features_.insert(&feature);
+    return true;
+  }
+
+  return false;
+}
+
+}  // namespace feature_engagement_tracker