[Mac] Remove content/ CrApplication.

content/common/chrome_application_mac.mm

-// 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.
-
-#import "content/common/chrome_application_mac.h"
-
-#include "base/logging.h"
-
-@interface CrApplication ()
-- (void)setHandlingSendEvent:(BOOL)handlingSendEvent;
-@end
-
-@implementation CrApplication
-// Initialize NSApplication using the custom subclass.  Check whether NSApp
-// was already initialized using another class, because that would break
-// some things.
-+ (NSApplication*)sharedApplication {
-  NSApplication* app = [super sharedApplication];
-  if (![NSApp isKindOfClass:self]) {
-    DLOG(ERROR) << "NSApp should be of type " << [[self className] UTF8String]
-                << ", not " << [[NSApp className] UTF8String];
-    DCHECK(false) << "NSApp is of wrong type";
-  }
-  return app;
-}
-
-- (BOOL)isHandlingSendEvent {
-  return handlingSendEvent_;
-}
-
-- (void)setHandlingSendEvent:(BOOL)handlingSendEvent {
-  handlingSendEvent_ = handlingSendEvent;
-}
-
-- (void)clearIsHandlingSendEvent {
-  [self setHandlingSendEvent:NO];
-}
-
-- (void)sendEvent:(NSEvent*)event {
-  base::mac::ScopedSendingEvent sendingEventScoper;
-  [super sendEvent:event];
-}
-
-@end
-
-namespace chrome_application_mac {
-
-void RegisterCrApp() {
-  [CrApplication sharedApplication];
-}
-
-}  // namespace chrome_application_mac