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

base/test/mock_chrome_application_mac.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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 BASE_TEST_MOCK_CHROME_APPLICATION_MAC_H_
 #define BASE_TEST_MOCK_CHROME_APPLICATION_MAC_H_
 #pragma once
 
 #if defined(__OBJC__)
 
 #import <AppKit/AppKit.h>
 
+#include "base/mac/scoped_sending_event.h"
 #include "base/message_pump_mac.h"
 
-// A mock implementation of CrAppProtocol that claims that -sendEvent: is never
-// on the stack. This can be used in tests that need an NSApplication and use a
-// runloop, but don't run nested message loops.
-@interface MockCrApp : NSApplication<CrAppProtocol>
+// A basic implementation of CrAppProtocol and
+// CrAppControlProtocol. This can be used in tests that need an
+// NSApplication and use a runloop, or which need a ScopedSendingEvent
+// when handling a nested event loop.
+@interface MockCrApp : NSApplication<CrAppProtocol,
+                                     CrAppControlProtocol> {
+ @private
+  BOOL handlingSendEvent_;
+}
 @end
 
 #endif
 
 // To be used to instantiate MockCrApp from C++ code.
 namespace mock_cr_app {
 void RegisterMockCrApp();
 }  // namespace mock_cr_app
 
 #endif  // BASE_TEST_MOCK_CHROME_APPLICATION_MAC_H_