Close bubbles not on UpdateToolbar but when the activated tab is changed

chrome/browser/ui/cocoa/browser_window_cocoa.h

 // Copyright (c) 2012 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_COCOA_BROWSER_WINDOW_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_COCOA_H_
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/extension_keybinding_registry.h"
@@ skipping 89 matching lines @@
   void ConfirmAddSearchProvider(TemplateURL* template_url,
                                 Profile* profile) override;
   void ShowUpdateChromeDialog() override;
   void ShowBookmarkBubble(const GURL& url, bool already_bookmarked) override;
   void ShowBookmarkAppBubble(const WebApplicationInfo& web_app_info,
                              const std::string& extension_id) override;
   void ShowTranslateBubble(content::WebContents* contents,
                            translate::TranslateStep step,
                            translate::TranslateErrors::Type error_type,
                            bool is_user_gesture) override;
+  void CloseTranslateBubble() override;
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
   void ShowOneClickSigninBubble(
       OneClickSigninBubbleType type,
       const base::string16& email,
       const base::string16& error_message,
       const StartSyncCallback& start_sync_callback) override;
 #endif
   bool IsDownloadShelfVisible() const override;
   DownloadShelf* GetDownloadShelf() override;
   void ConfirmBrowserCloseWithPendingDownloads(
@@ skipping 55 matching lines @@
   NSWindow* window() const;  // Accessor for the (current) |NSWindow|.
 
   Browser* browser_;  // weak, owned by controller
   BrowserWindowController* controller_;  // weak, owns us
   base::scoped_nsobject<NSString> pending_window_title_;
   ui::WindowShowState initial_show_state_;
   NSInteger attention_request_id_;  // identifier from requestUserAttention
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_COCOA_H_