mac: Stop using __weak.

chrome/browser/ui/cocoa/autofill/autofill_popup_view_cocoa.h

 // Copyright (c) 2012 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_AUTOFILL_AUTOFILL_POPUP_VIEW_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_AUTOFILL_AUTOFILL_POPUP_VIEW_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "chrome/browser/ui/cocoa/autofill/autofill_popup_base_view_cocoa.h"
 
 namespace autofill {
 class AutofillPopupController;
 }  // namespace autofill
 
 // Draws the native Autofill popup view on Mac.
 @interface AutofillPopupViewCocoa : AutofillPopupBaseViewCocoa {
  @private
   // The cross-platform controller for this view.
-  __weak autofill::AutofillPopupController* controller_;
+  autofill::AutofillPopupController* controller_;  // weak
 }
 
 // Designated initializer.
 - (id)initWithController:(autofill::AutofillPopupController*)controller
                    frame:(NSRect)frame;
 
 // Informs the view that its controller has been (or will imminently be)
 // destroyed.
 - (void)controllerDestroyed;
 
 - (void)invalidateRow:(size_t)row;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_AUTOFILL_AUTOFILL_POPUP_VIEW_COCOA_H_