Close the save card bubble on tab switch.

chrome/browser/ui/autofill/save_card_bubble_controller_impl.h

 // Copyright 2015 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_AUTOFILL_SAVE_CARD_BUBBLE_CONTROLLER_IMPL_H_
 #define CHROME_BROWSER_UI_AUTOFILL_SAVE_CARD_BUBBLE_CONTROLLER_IMPL_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer/elapsed_timer.h"
@@ skipping 52 matching lines @@
 
   // Returns true if Omnibox save credit card icon should be visible.
   bool IsIconVisible() const;
 
   // Returns nullptr if no bubble is currently shown.
   SaveCardBubbleView* save_card_bubble_view() const;
 
   // SaveCardBubbleController:
   base::string16 GetWindowTitle() const override;
   base::string16 GetExplanatoryMessage() const override;
+  void HideBubble() override;
   void OnSaveButton() override;
   void OnCancelButton() override;
   void OnLearnMoreClicked() override;
   void OnLegalMessageLinkClicked(const GURL& url) override;
   void OnBubbleClosed() override;
 
   const LegalMessageLines& GetLegalMessageLines() const override;
 
  protected:
   explicit SaveCardBubbleControllerImpl(content::WebContents* web_contents);
@@ skipping 38 matching lines @@
   // Used to measure the amount of time on a page; if it's less than some
   // reasonable limit, then don't close the bubble upon navigation.
   scoped_ptr<base::ElapsedTimer> timer_;
 
   DISALLOW_COPY_AND_ASSIGN(SaveCardBubbleControllerImpl);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_AUTOFILL_SAVE_CARD_BUBBLE_CONTROLLER_IMPL_H_