Ignore OnBubbleHidden() event when the password bubble is reopened.

chrome/browser/ui/passwords/passwords_model_delegate.cc

Index: chrome/browser/ui/passwords/passwords_model_delegate.cc
diff --git a/chrome/browser/ui/passwords/passwords_model_delegate.cc b/chrome/browser/ui/passwords/passwords_model_delegate.cc
index 12e299d41323faa88d30f5a65b59dda598aa8cee..71142142994ab3e39b62e841f58fdf7e638246a5 100644
--- a/chrome/browser/ui/passwords/passwords_model_delegate.cc
+++ b/chrome/browser/ui/passwords/passwords_model_delegate.cc
@@ -6,8 +6,9 @@
 
 #include "chrome/browser/ui/passwords/manage_passwords_ui_controller.h"
 
-PasswordsModelDelegate* PasswordsModelDelegateFromWebContents(
-    content::WebContents* web_contents) {
+base::WeakPtr<PasswordsModelDelegate>
+PasswordsModelDelegateFromWebContents(content::WebContents* web_contents) {
   DCHECK(web_contents);
-  return ManagePasswordsUIController::FromWebContents(web_contents);
+  return ManagePasswordsUIController::FromWebContents(web_contents)->
+      GetModelDelegateProxy();
 }