FBTF: Remove unnecessary STL #includes from src/webkit.

webkit/appcache/appcache.h

-// Copyright (c) 2009 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.
 
 #ifndef WEBKIT_APPCACHE_APPCACHE_H_
 #define WEBKIT_APPCACHE_APPCACHE_H_
 
 #include <map>
 #include <set>
-#include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/ref_counted.h"
 #include "base/time.h"
 #include "googleurl/src/gurl.h"
 #include "webkit/appcache/appcache_database.h"
 #include "webkit/appcache/appcache_entry.h"
 #include "webkit/appcache/manifest_parser.h"
 
@@ skipping 126 matching lines @@
   AppCacheService* service_;
 
   FRIEND_TEST_ALL_PREFIXES(AppCacheTest, InitializeWithManifest);
 
   DISALLOW_COPY_AND_ASSIGN(AppCache);
 };
 
 }  // namespace appcache
 
 #endif  // WEBKIT_APPCACHE_APPCACHE_H_