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diff --git a/chromium/components/blocked_content/popup_blocker.h b/chromium/components/blocked_content/popup_blocker.h
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+++ b/chromium/components/blocked_content/popup_blocker.h
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+// Copyright 2018 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.
+
+#ifndef COMPONENTS_BLOCKED_CONTENT_POPUP_BLOCKER_H_
+#define COMPONENTS_BLOCKED_CONTENT_POPUP_BLOCKER_H_
+
+#include "components/content_settings/core/browser/host_content_settings_map.h"
+#include "third_party/blink/public/mojom/window_features/window_features.mojom-forward.h"
+#include "ui/base/window_open_disposition.h"
+#include "url/gurl.h"
+
+class HostContentSettingsMap;
+
+namespace content {
+class WebContents;
+struct OpenURLParams;
+}  // namespace content
+
+namespace blocked_content {
+class PopupNavigationDelegate;
+
+// Classifies what caused a popup to be blocked.
+enum class PopupBlockType {
+  kNotBlocked,
+
+  // Popup blocked due to no user gesture.
+  kNoGesture,
+  // Popup blocked due to the abusive popup blocker.
+  kAbusive,
+};
+
+// Whether a new window opened with |disposition| would be considered for
+// popup blocking. Note that this includes more dispositions than just
+// NEW_POPUP since the popup blocker targets all new windows and tabs.
+bool ConsiderForPopupBlocking(WindowOpenDisposition disposition);
+
+// Returns null if the popup request defined by |delegate| and the optional
+// |open_url_params| should be blocked. In that case, it is also added to the
+// |blocked_popups_| container.
+//
+// |opener_url| is an optional parameter used to compute how the popup
+// permission will behave. If it is nullptr, the current committed URL will be
+// used instead.
+//
+// If this function returns a non-null unique_ptr, the navigation was not
+// blocked and should be continued.
+std::unique_ptr<PopupNavigationDelegate> MaybeBlockPopup(
+    content::WebContents* web_contents,
+    const GURL* opener_url,
+    std::unique_ptr<PopupNavigationDelegate> delegate,
+    const content::OpenURLParams* open_url_params,
+    const blink::mojom::WindowFeatures& window_features,
+    HostContentSettingsMap* settings_map);
+
+}  // namespace blocked_content
+
+#endif  // COMPONENTS_BLOCKED_CONTENT_POPUP_BLOCKER_H_