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

chrome/test/sync/engine/proto_extension_validator.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.
 
 // A test utility that makes it easy to assert the exact presence of
 // protobuf extensions in an extensible message.  Example code:
 //
 // sync_pb::EntitySpecifics value;   // Set up a test value.
 // value.MutableExtension(sync_pb::bookmark);
 //
 // ProtoExtensionValidator<sync_pb::EntitySpecifics> good_expectation(value);
 // good_expectation.ExpectHasExtension(sync_pb::bookmark);
 // good_expectation.ExpectHasNoOtherFieldsOrExtensions();
 //
 // ProtoExtensionValidator<sync_pb::EntitySpecifics> bad_expectation(value);
 // bad_expectation.ExpectHasExtension(sync_pb::preference);  // Fails, no pref
 // bad_expectation.ExpectHasNoOtherFieldsOrExtensions();  // Fails, bookmark
 
 #ifndef CHROME_TEST_SYNC_ENGINE_PROTO_EXTENSION_VALIDATOR_H_
 #define CHROME_TEST_SYNC_ENGINE_PROTO_EXTENSION_VALIDATOR_H_
 #pragma once
 
-#include <vector>
-
 #include "base/string_util.h"
 #include "chrome/test/sync/engine/syncer_command_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace browser_sync {
 
 template<typename MessageType>
 class ProtoExtensionValidator {
  public:
   explicit ProtoExtensionValidator(const MessageType& proto)
@@ skipping 13 matching lines @@
   }
 
  private:
   MessageType proto_;
   DISALLOW_COPY_AND_ASSIGN(ProtoExtensionValidator);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_TEST_SYNC_ENGINE_PROTO_EXTENSION_VALIDATOR_H_