Move data reduction proxy to Chrome-Proxy header for authentication

chrome/browser/net/chrome_network_delegate.cc

Index: chrome/browser/net/chrome_network_delegate.cc
diff --git a/chrome/browser/net/chrome_network_delegate.cc b/chrome/browser/net/chrome_network_delegate.cc
index 89bb50a277bb2a918abc0b815d27372a65bb312e..850b3f08266dc1e33e69680ceb16bf2e2f71e103 100644
--- a/chrome/browser/net/chrome_network_delegate.cc
+++ b/chrome/browser/net/chrome_network_delegate.cc
@@ -31,6 +31,7 @@
 #include "chrome/browser/task_manager/task_manager.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
+#include "components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_metrics.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_params.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h"
@@ -48,6 +49,8 @@
 #include "net/cookies/cookie_options.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
+#include "net/proxy/proxy_info.h"
+#include "net/proxy/proxy_server.h"
 #include "net/socket_stream/socket_stream.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
@@ -296,7 +299,8 @@ ChromeNetworkDelegate::ChromeNetworkDelegate(
       original_content_length_(0),
       first_request_(true),
       prerender_tracker_(NULL),
-      data_reduction_proxy_params_(NULL) {
+      data_reduction_proxy_params_(NULL),
+      data_reduction_proxy_auth_request_handler_(NULL) {
   DCHECK(enable_referrers);
   extensions_delegate_.reset(
       ChromeExtensionsNetworkDelegate::Create(event_router));
@@ -476,6 +480,16 @@ int ChromeNetworkDelegate::OnBeforeSendHeaders(
   return extensions_delegate_->OnBeforeSendHeaders(request, callback, headers);
 }
 
+void ChromeNetworkDelegate::OnBeforeSendProxyHeaders(
+    net::URLRequest* request,
+    const net::ProxyInfo& proxy_info,
+    net::HttpRequestHeaders* headers) {
+  if (data_reduction_proxy_auth_request_handler_) {
+    data_reduction_proxy_auth_request_handler_->MaybeAddRequestHeader(
+        request, proxy_info.proxy_server(), headers);
+  }
+}
+
 void ChromeNetworkDelegate::OnSendHeaders(
     net::URLRequest* request,
     const net::HttpRequestHeaders& headers) {