[Mac] Move ScopedSendingEvent from content/common/mac to base/mac.

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;
@@ skipping 19 matching lines @@
 
 - (void)setHandlingSendEvent:(BOOL)handlingSendEvent {
   handlingSendEvent_ = handlingSendEvent;
 }
 
 - (void)clearIsHandlingSendEvent {
   [self setHandlingSendEvent:NO];
 }
 
 - (void)sendEvent:(NSEvent*)event {
-  content::mac::ScopedSendingEvent sendingEventScoper;
+  base::mac::ScopedSendingEvent sendingEventScoper;
   [super sendEvent:event];
 }
 
 @end
 
 namespace chrome_application_mac {
 
 void RegisterCrApp() {
   [CrApplication sharedApplication];
 }
 
 }  // namespace chrome_application_mac