Use chromium version for data reduction proxy version

android_webview/browser/net/aw_url_request_context_getter.cc

Index: android_webview/browser/net/aw_url_request_context_getter.cc
diff --git a/android_webview/browser/net/aw_url_request_context_getter.cc b/android_webview/browser/net/aw_url_request_context_getter.cc
index 6e39cd79cce587003a430172276bbcd81324d69c..f4260b74585a80e97886c2c9928c785e25b8b068 100644
--- a/android_webview/browser/net/aw_url_request_context_getter.cc
+++ b/android_webview/browser/net/aw_url_request_context_getter.cc
@@ -232,7 +232,8 @@ void AwURLRequestContextGetter::InitializeURLRequestContext() {
   data_reduction_proxy_auth_request_handler_.reset(
       new data_reduction_proxy::DataReductionProxyAuthRequestHandler(
           data_reduction_proxy::kClientAndroidWebview,
-          data_reduction_proxy::kAndroidWebViewProtocolVersion,
+          data_reduction_proxy::DataReductionProxyAuthRequestHandler::
+              ChromiumVersion(),
           data_reduction_proxy_settings->params(),
           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));