Fix DCHECK when opening two password bubbles one after another.

chrome/browser/ui/cocoa/passwords/passwords_bubble_cocoa.h

Index: chrome/browser/ui/cocoa/passwords/passwords_bubble_cocoa.h
diff --git a/chrome/browser/ui/cocoa/passwords/passwords_bubble_cocoa.h b/chrome/browser/ui/cocoa/passwords/passwords_bubble_cocoa.h
index 7a39b4ca38f7d8c6930ad172d7ec146015f3c4bb..7b98efdaf0816b955db41b3d0632561498d4dc6e 100644
--- a/chrome/browser/ui/cocoa/passwords/passwords_bubble_cocoa.h
+++ b/chrome/browser/ui/cocoa/passwords/passwords_bubble_cocoa.h
@@ -27,6 +27,7 @@ class ManagePasswordsBubbleCocoa {
   static void Show(content::WebContents* webContents, bool user_action);
 
   // Closes and deletes the bubble.
+  void Close(bool no_animation);
   void Close();
 
   // Sets the location bar icon that should be updated with state changes.
@@ -55,10 +56,6 @@ class ManagePasswordsBubbleCocoa {
   // The location bar icon corresponding to the bubble.
   ManagePasswordsIcon* icon_;
 
-  // Whether there is currently a close operation taking place. Prevents
-  // multiple attempts to close the window.
-  bool closing_;
-
   // The view controller for the bubble. Weak; owns itself. Must be nilled
   // after the bubble is closed.
   ManagePasswordsBubbleController* controller_;