Add client type in chrome-proxy header for desktop.

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 1adda3d1b32a43a54e8f60d29b91eb0ec7ec866f..9487bde8c8c5ffb6253f935535d77e544e54eef3 100644
--- a/android_webview/browser/net/aw_url_request_context_getter.cc
+++ b/android_webview/browser/net/aw_url_request_context_getter.cc
@@ -233,7 +233,7 @@ void AwURLRequestContextGetter::InitializeURLRequestContext() {
   DCHECK(data_reduction_proxy_settings);
   data_reduction_proxy_auth_request_handler_.reset(
       new data_reduction_proxy::DataReductionProxyAuthRequestHandler(
-          data_reduction_proxy::kClientAndroidWebview,
+          data_reduction_proxy::Client::WEBVIEW_ANDROID,
           data_reduction_proxy_settings->params(),
           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));