[Extensions UI] Handle multiple warning bubbles racing to show

chrome/browser/extensions/extension_message_bubble_controller.h

 // Copyright (c) 2013 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 CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_CONTROLLER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_CONTROLLER_H_
 
 #include <stddef.h>
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/ui/browser_list_observer.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/common/extension.h"
 
 class Browser;
 class BrowserList;
 class ExtensionService;
+class ToolbarActionsModel;
 class Profile;
 
 namespace extensions {
 
 class ExtensionPrefs;
 class ExtensionRegistry;
 
 class ExtensionMessageBubbleController : public chrome::BrowserListObserver {
  public:
   // UMA histogram constants.
@@ skipping 122 matching lines @@
 
   // Called when the bubble is actually shown. Because some bubbles are delayed
   // (in order to weather the "focus storm"), they are not shown immediately.
   void OnShown();
 
   // Callbacks from bubble. Declared virtual for testing purposes.
   virtual void OnBubbleAction();
   virtual void OnBubbleDismiss(bool dismissed_by_deactivation);
   virtual void OnLinkClicked();
 
+  // Sets this bubble as the active bubble being shown.
+  void SetIsActiveBubble();
+
   void ClearProfileListForTesting();
 
   static void set_should_ignore_learn_more_for_testing(
       bool should_ignore_learn_more);
 
  private:
   // BrowserListObserver:
   void OnBrowserRemoved(Browser* browser) override;
 
   // Iterate over the known extensions and acknowledge each one.
   void AcknowledgeExtensions();
 
   // Get the data this class needs.
   ExtensionIdList* GetOrCreateExtensionList();
 
   // Performs cleanup after the bubble closes.
   void OnClose();
 
   std::set<Profile*>* GetProfileSet();
 
   // A weak pointer to the Browser we are associated with. Not owned by us.
   Browser* browser_;
 
+  // The associated ToolbarActionsModel. Not owned.
+  ToolbarActionsModel* model_;
+
   // The list of extensions found.
   ExtensionIdList extension_list_;
 
   // The action the user took in the bubble.
   BubbleAction user_action_;
 
   // Our delegate supplying information about what to show in the dialog.
   std::unique_ptr<Delegate> delegate_;
 
   // Whether this class has initialized.
   bool initialized_;
 
   // Whether or not the bubble is highlighting extensions.
-  bool did_highlight_;
+  bool is_highlighting_;
+
+  // Whether or not this bubble is the active bubble being shown.
+  bool is_active_bubble_;
 
   ScopedObserver<BrowserList, BrowserListObserver> browser_list_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionMessageBubbleController);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_CONTROLLER_H_