[Mac] Clean up SadTabView and let SadTabController provide its content

chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h

 // Copyright (c) 2011 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_TAB_CONTENTS_SAD_TAB_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_SAD_TAB_CONTROLLER_H_
 
 #include "base/compiler_specific.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
@@ skipping 20 matching lines @@
   base::scoped_nsobject<SadTabController> sad_tab_controller_;
 
   content::WebContents* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(SadTabCocoa);
 };
 
 }  // namespace chrome
 
 // A controller class that manages the SadTabView (aka "Aw Snap" or crash page).
-@interface SadTabController : NSViewController {
- @private
-  content::WebContents* webContents_;  // Weak reference.
-  base::scoped_nsobject<SadTabView> sadTabView_;
-}
+@interface SadTabController : NSViewController
 
 // Designated initializer.
 - (id)initWithWebContents:(content::WebContents*)webContents;
 
 // Returns a weak reference to the WebContents whose WebContentsView created
 // this SadTabController.
 - (content::WebContents*)webContents;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_SAD_TAB_CONTROLLER_H_