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 41 matching lines @@
   // 2. Two or more consecutive dollar signs in the template string will not
   //    expand correctly.
   // 3. "${" anywhere in the template string is invalid.
   // 4. "\n" embedded anywhere in the template string, or an empty template
   //    string, can be used to separate paragraphs. It is not possible to create
   //    a completely blank line by using two consecutive newlines (they will be
   //    treated as a single newline by views::StyledLabel).
   void ShowBubbleForUpload(const base::Closure& save_card_callback,
                            scoped_ptr<base::DictionaryValue> legal_message);
 
+  void HideBubble();
   void ReshowBubble();
 
   // 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;
@@ skipping 49 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_