Move GUID utils to src/chrome/common.

chrome/browser/policy/device_token_fetcher.cc

 // 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.
 
 #include "chrome/browser/policy/device_token_fetcher.h"
 
 #include "base/file_util.h"
+#include "base/guid.h"
 #include "base/path_service.h"
 #include "base/singleton.h"
 #include "base/string_util.h"
-#include "chrome/browser/guid.h"
 #include "chrome/browser/net/gaia/token_service.h"
 #include "chrome/browser/policy/proto/device_management_local.pb.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/net/gaia/gaia_constants.h"
 #include "chrome/common/notification_details.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/notification_source.h"
 #include "chrome/common/notification_type.h"
 
@@ skipping 305 matching lines @@
   device_credentials.set_device_token(device_token);
   device_credentials.set_device_id(device_id);
   std::string data;
   bool no_error = device_credentials.SerializeToString(&data);
   DCHECK(no_error);
   file_util::WriteFile(path, data.c_str(), data.length());
 }
 
 // static
 std::string DeviceTokenFetcher::GenerateNewDeviceID() {
-  return guid::GenerateGUID();
+  return base::GenerateGUID();
 }
 
 }  // namespace policy