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

components/update_client/update_response.cc

 // Copyright 2014 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 "components/update_client/update_response.h"
 
 #include <algorithm>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
@@ skipping 138 matching lines @@
 // Parses the <manifest> tag.
 bool ParseManifestTag(xmlNode* manifest,
                       UpdateResponse::Result* result,
                       std::string* error) {
   // Get the version.
   result->manifest.version = GetAttribute(manifest, "version");
   if (result->manifest.version.empty()) {
     *error = "Missing version for manifest.";
     return false;
   }
-  base::Version version(result->manifest.version);
+  Version version(result->manifest.version);
   if (!version.IsValid()) {
     *error = "Invalid version: '";
     *error += result->manifest.version;
     *error += "'.";
     return false;
   }
 
   // Get the minimum browser version (not required).
   result->manifest.browser_min_version =
       GetAttribute(manifest, "prodversionmin");
   if (result->manifest.browser_min_version.length()) {
-    base::Version browser_min_version(result->manifest.browser_min_version);
+    Version browser_min_version(result->manifest.browser_min_version);
     if (!browser_min_version.IsValid()) {
       *error = "Invalid prodversionmin: '";
       *error += result->manifest.browser_min_version;
       *error += "'.";
       return false;
     }
   }
 
   // Get the <packages> node.
   std::vector<xmlNode*> packages = GetChildren(manifest, "packages");
@@ skipping 158 matching lines @@
       results_.list.push_back(result);
     } else {
       ParseError("%s", error.c_str());
     }
   }
 
   return true;
 }
 
 }  // namespace update_client