Correcting the version field in the Chrome-Proxy header to be the chromium build and patch number.

components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.cc

Index: components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.cc
diff --git a/components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.cc b/components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.cc
index 6130eda1b94f3017ca29bfdb067696a723d74a41..7ca11365f84a5abd09a138243499adf23a38548d 100644
--- a/components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.cc
+++ b/components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.cc
@@ -20,9 +20,6 @@
 
 namespace data_reduction_proxy {
 
-// The version of the authentication protocol.
-const char kProtocolVersion[] = "0";
-
 // The clients supported by the data reduction proxy.
 const char kClientAndroidWebview[] = "webview";
 const char kClientChromeAndroid[] = "android";
@@ -36,9 +33,9 @@ bool DataReductionProxyAuthRequestHandler::IsKeySetOnCommandLine() {
 }
 
 DataReductionProxyAuthRequestHandler::DataReductionProxyAuthRequestHandler(
-    DataReductionProxyParams* params)
+    DataReductionProxyParams* params, const std::string& version)

[bengr, 2014/07/31 18:22:40]

This won't work with android webview.

Also, I don't like the interface. I think a better interface is:

DataReductionProxyAuthRequestHandler(
  const std::string& client,
  const std::string& version,
  DataReductionProxyParams* params);

void SetKey(const std::string& key);

[megjablon, 2014/07/31 20:48:36]

Done.

     : data_reduction_proxy_params_(params) {
-  version_ = kProtocolVersion;
+  version_ = version;
 #if defined(OS_ANDROID)
   client_ = kClientChromeAndroid;
 #elif defined(OS_IOS)