[Mac] Organize some files into chrome/browser/ui/cocoa/tab_contents/....

chrome/browser/ui/cocoa/sad_tab_controller.h

-// Copyright (c) 2009 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_SAD_TAB_CONTROLLER_H_
-#define CHROME_BROWSER_UI_COCOA_SAD_TAB_CONTROLLER_H_
-#pragma once
-
-#import <Cocoa/Cocoa.h>
-
-class TabContents;
-
-// A controller class that manages the SadTabView (aka "Aw Snap" or crash page).
-@interface SadTabController : NSViewController {
- @private
-  TabContents* tabContents_;  // Weak reference.
-}
-
-// Designated initializer is initWithTabContents.
-- (id)initWithTabContents:(TabContents*)someTabContents
-                superview:(NSView*)superview;
-
-// This action just calls the NSApp sendAction to get it into the standard
-// Cocoa action processing.
-- (IBAction)openLearnMoreAboutCrashLink:(id)sender;
-
-// Returns a weak reference to the TabContents whose TabContentsView created
-// this SadTabController.
-- (TabContents*)tabContents;
-
-@end
-
-#endif  // CHROME_BROWSER_UI_COCOA_SAD_TAB_CONTROLLER_H_