[Mac] Remove content/ CrApplication.

base/test/mock_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.
 
 #include "base/test/mock_chrome_application_mac.h"
 
 #include "base/auto_reset.h"
 #include "base/logging.h"
 
 @implementation MockCrApp
 
 + (NSApplication*)sharedApplication {
   NSApplication* app = [super sharedApplication];
   DCHECK([app conformsToProtocol:@protocol(CrAppControlProtocol)])
       << "Existing NSApp (class " << [[app className] UTF8String]
       << ") does not conform to required protocol.";
+  DCHECK(base::MessagePumpMac::UsingCrApp())
+      << "MessagePumpMac::Create() was called before "
+      << "+[MockCrApp sharedApplication]";
   return app;
 }
 
 - (void)sendEvent:(NSEvent*)event {
   AutoReset<BOOL> scoper(&handlingSendEvent_, YES);
   [super sendEvent:event];
 }
 
 - (void)setHandlingSendEvent:(BOOL)handlingSendEvent {
   handlingSendEvent_ = handlingSendEvent;
 }
 
 - (BOOL)isHandlingSendEvent {
   return handlingSendEvent_;
 }
 
 @end
 
 namespace mock_cr_app {
 
 void RegisterMockCrApp() {
   [MockCrApp sharedApplication];
 }
 
 }  // namespace mock_cr_app