Close the save card bubble on tab switch.

chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc

Index: chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc
diff --git a/chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc b/chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc
index 43e99aee6538a211de858bfcbc997b64fd0dd302..2b39c0d170e98d0e4696a2fcbe1f1677e0f2714a 100644
--- a/chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc
+++ b/chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc
@@ -200,6 +200,13 @@ void SaveCardBubbleControllerImpl::ShowBubbleForUpload(
   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(