Add build and patch to Chrome-Proxy header

chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h
index 72f502680d8ed233185194e99def581fad7c3de3..945d1b4bec01510f8ee62fac03c922454786aaa9 100644
--- a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h
@@ -46,19 +46,37 @@ class DataReductionProxyChromeSettings
       PrefService* local_state_prefs,
       net::URLRequestContextGetter* request_context);
 
-  // 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();
+  // Using the chrome::VersionInfo version, returns the build number of the
+  // chrome version. If the chrome::VersionInfo version isn't of the form
+  // xx.xx.xx.xx returns an empty string.
+  static std::string GetBuildNumber();
+
+  // Using the chrome::VersionInfo version, returns the patch number of the
+  // chrome version. If the chrome::VersionInfo version isn't of the form
+  // xx.xx.xx.xx returns an empty string.
+  static std::string GetPatchNumber();
 
   // Gets the client type for the data reduction proxy.
   static std::string GetClient();
 
  private:
+  FRIEND_TEST_ALL_PREFIXES(DataReductionProxyChromeSettingsTest,
+                           TestGetBuildNumber);
+  FRIEND_TEST_ALL_PREFIXES(DataReductionProxyChromeSettingsTest,
+                           TestGetPatchNumber);
+
   // 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 number of the string. If |version|
+  // isn't of the form xx.xx.xx.xx returns an empty string.
+  static std::string GetBuildNumberFromString(std::string version);
+
+  // Using |version|, returns the patch number of the string. If |version|
+  // isn't of the form xx.xx.xx.xx returns an empty string.
+  static std::string GetPatchNumberFromString(std::string version);
+
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyChromeSettings);
 };