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

chrome/app/chrome_crash_reporter_client.cc

 // Copyright 2013 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/app/chrome_crash_reporter_client.h"
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 141 matching lines @@
   scoped_ptr<base::Environment> env(base::Environment::Create());
   if (!env->HasVar(env_vars::kRestartInfo))
     return false;
 
   env->SetVar(env_vars::kShowRestart, "1");
   return true;
 }
 
 bool ChromeCrashReporterClient::GetDeferredUploadsSupported(
     bool is_per_user_install) {
-  base::Version update_version = GoogleUpdateSettings::GetGoogleUpdateVersion(
+  Version update_version = GoogleUpdateSettings::GetGoogleUpdateVersion(
       !is_per_user_install);
   if (!update_version.IsValid() ||
       update_version.IsOlderThan(std::string(kMinUpdateVersion)))
     return false;
 
   return true;
 }
 
 bool ChromeCrashReporterClient::GetIsPerUserInstall(
     const base::FilePath& exe_path) {
@@ skipping 176 matching lines @@
 bool ChromeCrashReporterClient::EnableBreakpadForProcess(
     const std::string& process_type) {
   return process_type == switches::kRendererProcess ||
          process_type == switches::kPluginProcess ||
          process_type == switches::kPpapiPluginProcess ||
          process_type == switches::kZygoteProcess ||
          process_type == switches::kGpuProcess;
 }
 
 }  // namespace chrome