By default, remove user gesture restriction from permission bubbles

chrome/browser/ui/website_settings/permission_bubble_manager.h

Index: chrome/browser/ui/website_settings/permission_bubble_manager.h
diff --git a/chrome/browser/ui/website_settings/permission_bubble_manager.h b/chrome/browser/ui/website_settings/permission_bubble_manager.h
index 25e9a58fe1c7ffe14ab152e9852dcd851d6563f0..ec56c9ee57ce7d33a333c0c69f42e9ae1685db5d 100644
--- a/chrome/browser/ui/website_settings/permission_bubble_manager.h
+++ b/chrome/browser/ui/website_settings/permission_bubble_manager.h
@@ -57,6 +57,12 @@ class PermissionBubbleManager
   // take ownership of the view.
   void SetView(PermissionBubbleView* view) override;
 
+  // Controls whether incoming permission requests require user gestures.
+  // If |required| is false, requests will be displayed as soon as they come in.
+  // If |required| is true, requests will be silently queued until a request
+  // comes in with a user gesture.
+  void RequireUserGesture(bool required);
+
  private:
   friend class DownloadRequestLimiterTest;
   friend class PermissionBubbleManagerTest;
@@ -110,6 +116,10 @@ class PermissionBubbleManager
   bool HasUserGestureRequest(
       const std::vector<PermissionBubbleRequest*>& queue);
 
+  // Whether to delay displaying the bubble until a request with a user gesture.
+  // False by default, unless RequireUserGesture(bool) changes the value.
+  bool require_user_gesture_;
+
   // Whether or not we are showing the bubble in this tab.
   bool bubble_showing_;