[Mac] Remove content/ CrApplication.

content/common/chrome_application_mac.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 CONTENT_COMMON_CHROME_APPLICATION_MAC_H_
-#define CONTENT_COMMON_CHROME_APPLICATION_MAC_H_
-#pragma once
-
-#if defined(__OBJC__)
-
-#import <AppKit/AppKit.h>
-
-#include "base/basictypes.h"
-#import "base/mac/scoped_sending_event.h"
-
-@interface CrApplication : NSApplication<CrAppControlProtocol> {
- @private
-  BOOL handlingSendEvent_;
-}
-- (BOOL)isHandlingSendEvent;
-
-// Unconditionally clears |handlingSendEvent_|.  This should not be
-// used except in recovering from some sort of exceptional condition.
-- (void)clearIsHandlingSendEvent;
-
-+ (NSApplication*)sharedApplication;
-@end
-
-#endif  // defined(__OBJC__)
-
-namespace chrome_application_mac {
-
-// To be used to instantiate CrApplication from C++ code.
-void RegisterCrApp();
-
-}  // namespace chrome_application_mac
-
-#endif  // CONTENT_COMMON_CHROME_APPLICATION_MAC_H_