Revert of base: Remove using:: declaration from version.h header.

chrome/common/service_process_util.cc

 // Copyright (c) 2012 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/common/service_process_util.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 53 matching lines @@
   // us reading bogus data from shared memory for an app that has died.
   if (!CheckServiceProcessReady()) {
     return SERVICE_NOT_RUNNING;
   }
 #endif  // defined(OS_POSIX)
 
   // At this time we have a version string. Set the out param if it exists.
   if (service_version_out)
     *service_version_out = version;
 
-  base::Version service_version(version);
+  Version service_version(version);
   // If the version string is invalid, treat it like an older version.
   if (!service_version.IsValid())
     return SERVICE_OLDER_VERSION_RUNNING;
 
   // Get the version of the currently *running* instance of Chrome.
-  base::Version running_version(version_info::GetVersionNumber());
+  Version running_version(version_info::GetVersionNumber());
   if (!running_version.IsValid()) {
     NOTREACHED() << "Failed to parse version info";
     // Our own version is invalid. This is an error case. Pretend that we
     // are out of date.
     return SERVICE_NEWER_VERSION_RUNNING;
   }
 
   if (running_version.CompareTo(service_version) > 0) {
     return SERVICE_OLDER_VERSION_RUNNING;
   } else if (service_version.CompareTo(running_version) > 0) {
@@ skipping 173 matching lines @@
   shared_data->service_process_pid = base::GetCurrentProcId();
   shared_mem_service_data_.reset(shared_mem_service_data.release());
   return true;
 }
 
 IPC::ChannelHandle ServiceProcessState::GetServiceProcessChannel() {
   return ::GetServiceProcessChannel();
 }
 
 #endif  // !OS_MACOSX