FBTF: Remove "obviously" unneeded standard C++ library #includes.

chrome/test/automation/window_proxy.h

Index: chrome/test/automation/window_proxy.h
diff --git a/chrome/test/automation/window_proxy.h b/chrome/test/automation/window_proxy.h
index 937f2ae7232afab66f928df982f10244a111c536..cb7b0221450b6299e5b5060398f95561125e8d9a 100644
--- a/chrome/test/automation/window_proxy.h
+++ b/chrome/test/automation/window_proxy.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -12,8 +12,6 @@
 #include <windows.h>
 #endif
 
-#include <string>
-
 #include "base/keyboard_codes.h"
 #include "base/string16.h"
 #include "base/thread.h"