Remove dangling ManagePasswordsBubbleModel pointers. Test that different password bubbles don't pin…

chrome/browser/ui/cocoa/passwords/account_chooser_view_controller.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_COCOA_PASSWORDS_ACCOUNT_CHOOSER_VIEW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_PASSWORDS_ACCOUNT_CHOOSER_VIEW_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 41 matching lines @@
   AccountChooserBridge* bridge_;  // Weak.
   NSButton* cancelButton_;  // Weak.
   NSTableView* credentialsView_;  // Weak.
   NSTextView* titleView_;  //  Weak.
   base::scoped_nsobject<NSArray> credentialItems_;
   base::scoped_nsobject<AccountAvatarFetcherManager> avatarManager_;
 }
 
 // Initializes a new account chooser and populates it with the credentials
 // stored in |bridge->controller()|.
-- (id)initWithBridge:(AccountChooserBridge*)bridge;
+- (instancetype)initWithBridge:(AccountChooserBridge*)bridge;
+
+@property(nonatomic) AccountChooserBridge* bridge;
 @end
 
 @interface AccountChooserViewController(Testing)
-- (id)initWithBridge:(AccountChooserBridge*)bridge
-      avatarManager:(AccountAvatarFetcherManager*)avatarManager;
+- (instancetype)initWithBridge:(AccountChooserBridge*)bridge
+                 avatarManager:(AccountAvatarFetcherManager*)avatarManager;
 @property(nonatomic, readonly) NSButton* cancelButton;
 @property(nonatomic, readonly) NSTableView* credentialsView;
 @property(nonatomic, readonly) NSTextView* titleView;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_PASSWORDS_ACCOUNT_CHOOSER_VIEW_CONTROLLER_H_