FBTF: Remove unneeded headers from base/ (part 9)

chrome_frame/test/ie_event_sink.h

 // Copyright (c) 2010 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 CHROME_FRAME_TEST_IE_EVENT_SINK_H_
 #define CHROME_FRAME_TEST_IE_EVENT_SINK_H_
 
 #include <atlbase.h>
 #include <atlwin.h>
 #include <exdispid.h>
 #include <string>
 
-#include "base/lock.h"
 #include "base/scoped_comptr_win.h"
 
 #include "chrome_frame/test_utils.h"
 #include "chrome_frame/test/simulate_input.h"
 
 // Include without path to make GYP build see it.
 #include "chrome_tab.h"  // NOLINT
 
 namespace chrome_frame_test {
 
@@ skipping 255 matching lines @@
     listener_ = listener;
   }
 
  protected:
   PropertyNotifySinkListener* listener_;
 };
 
 }  // namespace chrome_frame_test
 
 #endif  // CHROME_FRAME_TEST_IE_EVENT_SINK_H_
-