Close the save card bubble on tab switch.

chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc

 // 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.
 
 #include "chrome/browser/ui/autofill/save_card_bubble_controller_impl.h"
 
 #include <stddef.h>
 
 #include "base/i18n/message_formatter.h"
 #include "base/strings/string_util.h"
@@ skipping 182 matching lines @@
         is_uploading_, is_reshow_);
 
     legal_message_lines_.clear();
     return;
   }
 
   save_card_callback_ = save_card_callback;
   ShowBubble();
 }
 
+void SaveCardBubbleControllerImpl::HideBubble() {
+  if (save_card_bubble_view_) {
+    save_card_bubble_view_->Hide();
+    save_card_bubble_view_ = nullptr;

[Evan Stade, 2016/01/12 01:24:37]

do we not get onbubbleclosed?

[Justin Donnelly, 2016/01/12 04:24:37]

No. Calling Hide() here nulls out the view's reference to the controller. The
view's WindowClosing method is then called but it exits early since controller_
is nullptr.

+  }
+}
+
 void SaveCardBubbleControllerImpl::ReshowBubble() {
   is_reshow_ = true;
   AutofillMetrics::LogSaveCardPromptMetric(
       AutofillMetrics::SAVE_CARD_PROMPT_SHOW_REQUESTED, is_uploading_,
       is_reshow_);
 
   ShowBubble();
 }
 
 bool SaveCardBubbleControllerImpl::IsIconVisible() const {
@@ skipping 122 matching lines @@
   location_bar->UpdateSaveCreditCardIcon();
 }
 
 void SaveCardBubbleControllerImpl::OpenUrl(const GURL& url) {
   web_contents()->OpenURL(
       content::OpenURLParams(url, content::Referrer(), NEW_FOREGROUND_TAB,
                              ui::PAGE_TRANSITION_LINK, false));
 }
 
 }  // namespace autofill