Add build and patch to Chrome-Proxy header

chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
index 26be2de2cd7dc939dba07a2f3d4b57d189009c0c..cd4a454231a901e4a7ed5644a412dc0541855f09 100644
--- a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
@@ -6,13 +6,11 @@
 
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_service.h"
-#include "base/strings/string_split.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
 #include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_configurator.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/common/chrome_version_info.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_configurator.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_params.h"
@@ -54,16 +52,6 @@ void DataReductionProxyChromeSettings::RegisterSyntheticFieldTrial(
 }
 
 // static
-std::string DataReductionProxyChromeSettings::GetBuildAndPatchNumber() {
-  chrome::VersionInfo version_info;
-  std::vector<std::string> version_parts;
-  base::SplitString(version_info.Version(), '.', &version_parts);
-  if (version_parts.size() != 4)
-    return "";
-  return version_parts[2] + version_parts[3];
-}
-
-// static
 std::string DataReductionProxyChromeSettings::GetClient() {
 #if defined(OS_ANDROID)
   return data_reduction_proxy::kClientChromeAndroid;