[Extensions] Show a "refresh" bubble when needed with click-to-script

chrome/browser/ui/toolbar/toolbar_actions_bar_delegate.h

 // Copyright 2014 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_UI_TOOLBAR_TOOLBAR_ACTIONS_BAR_DELEGATE_H_
 #define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_BAR_DELEGATE_H_
 
 #include <stddef.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/animation/tween.h"
 #include "ui/gfx/geometry/size.h"
 
 class ToolbarActionViewController;
+class ToolbarActionsBarBubbleDelegate;
 
 namespace extensions {
 class ExtensionMessageBubbleController;
 }
 
 // The delegate class (which, in production, represents the view) of the
 // ToolbarActionsBar.
 class ToolbarActionsBarDelegate {
  public:
   enum GetWidthTime {
@@ skipping 38 matching lines @@
 
   // Returns the width (including padding) for the overflow chevron.
   virtual int GetChevronWidth() const = 0;
 
   // Displays the bubble for the passed ExtensionMessageBubbleController,
   // anchored to |anchor_action|. If |anchor_action| is null, it should be
   // anchored to the hotdog menu.
   virtual void ShowExtensionMessageBubble(
       scoped_ptr<extensions::ExtensionMessageBubbleController> controller,
       ToolbarActionViewController* anchor_action) = 0;
+
+  // Shows the given |bubble| if no other bubbles are showing.
+  virtual void ShowToolbarActionBubble(
+      scoped_ptr<ToolbarActionsBarBubbleDelegate> bubble) = 0;
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_BAR_DELEGATE_H_