FBTF: Remove unneeded headers from base/ (part 3)

chrome/common/extensions/update_manifest.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_UPDATE_MANIFEST_H_
 #define CHROME_COMMON_EXTENSIONS_UPDATE_MANIFEST_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
-#include "base/values.h"
-#include "base/version.h"
 #include "googleurl/src/gurl.h"
 
-class Version;
-
 class UpdateManifest {
  public:
 
   // An update manifest looks like this:
   //
   // <?xml version='1.0' encoding='UTF-8'?>
   // <gupdate xmlns='http://www.google.com/update2/response' protocol='2.0'>
   //  <daystart elapsed_seconds='300' />
   //  <app appid='12345'>
   //   <updatecheck codebase='http://example.com/extension_1.2.3.4.crx'
@@ skipping 42 matching lines @@
   Results results_;
   std::string errors_;
 
   // Helper function that adds parse error details to our errors_ string.
   void ParseError(const char* details, ...);
 
   DISALLOW_COPY_AND_ASSIGN(UpdateManifest);
 };
 
 #endif  // CHROME_COMMON_EXTENSIONS_UPDATE_MANIFEST_H_
-