Add build and patch to Chrome-Proxy header

chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h

 // 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.
 
 #ifndef CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_CHROME_SETTINGS_H_
 #define CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_CHROME_SETTINGS_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_settings.h"
 #include "components/keyed_service/core/keyed_service.h"
@@ skipping 37 matching lines @@
 
   // Using the chrome::VersionInfo version, returns the build and patch portion
   // of the string delimited by a period. If the chrome::VersionInfo version
   // isn't of the form xx.xx.xx.xx returns an empty string.
   static std::string GetBuildAndPatchNumber();
 
   // Gets the client type for the data reduction proxy.
   static std::string GetClient();
 
  private:
+  FRIEND_TEST_ALL_PREFIXES(DataReductionProxyChromeSettingsTest,
+                           TestGetBuildAndPatchNumber);
+
   // Registers the DataReductionProxyEnabled synthetic field trial with
   // the group |data_reduction_proxy_enabled|.
   void RegisterSyntheticFieldTrial(bool data_reduction_proxy_enabled);
 
+  // Using |version|, returns the build and patch portion of the string
+  // delimited by a period. If |version| isn't of the form xx.xx.xx.xx returns
+  // an empty string.
+  static std::string GetBuildAndPatchNumberFromString(std::string version);
+
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyChromeSettings);
 };
 
 #endif  // CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_CHROME_SETTINGS_H_