[Extensions] Make extension message bubble factory platform-abstract

chrome/browser/ui/views/toolbar/browser_actions_container.h

Index: chrome/browser/ui/views/toolbar/browser_actions_container.h
diff --git a/chrome/browser/ui/views/toolbar/browser_actions_container.h b/chrome/browser/ui/views/toolbar/browser_actions_container.h
index ab40e10dccbd61eefaeba677c9e4c62faf4bc539..3b26802d3dff44893109127629f5ae5b98b95a93 100644
--- a/chrome/browser/ui/views/toolbar/browser_actions_container.h
+++ b/chrome/browser/ui/views/toolbar/browser_actions_container.h
@@ -252,6 +252,9 @@ class BrowserActionsContainer
   bool IsPopupRunning() const override;
   void OnOverflowedActionWantsToRunChanged(
       bool overflowed_action_wants_to_run) override;
+  void ShowExtensionMessageBubble(
+      scoped_ptr<extensions::ExtensionMessageBubbleController> controller)
+          override;
 
   // Overridden from extension::ExtensionKeybindingRegistry::Delegate:
   extensions::ActiveTabPermissionGranter* GetActiveTabPermissionGranter()
@@ -342,6 +345,10 @@ class BrowserActionsContainer
   // The class that registers for keyboard shortcuts for extension commands.
   scoped_ptr<ExtensionKeybindingRegistryViews> extension_keybinding_registry_;
 
+  // The controller of the bubble to show once animation finishes, if any.
+  scoped_ptr<extensions::ExtensionMessageBubbleController>
+      pending_extension_bubble_controller_;
+
   ObserverList<BrowserActionsContainerObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionsContainer);