Move data reduction proxy to Chrome-Proxy header for authentication

net/url_request/url_request_http_job.cc

Index: net/url_request/url_request_http_job.cc
diff --git a/net/url_request/url_request_http_job.cc b/net/url_request/url_request_http_job.cc
index 4b7d4e0fae5a0f7290857d62c5237c44790b7e47..2afc7e8f3b35bdbbe733aca3816589a6a5e8c34d 100644
--- a/net/url_request/url_request_http_job.cc
+++ b/net/url_request/url_request_http_job.cc
@@ -34,6 +34,7 @@
 #include "net/http/http_transaction.h"
 #include "net/http/http_transaction_factory.h"
 #include "net/http/http_util.h"
+#include "net/proxy/proxy_info.h"
 #include "net/ssl/ssl_cert_request_info.h"
 #include "net/ssl/ssl_config_service.h"
 #include "net/url_request/fraudulent_certificate_reporter.h"
@@ -286,6 +287,18 @@ void URLRequestHttpJob::Kill() {
   URLRequestJob::Kill();
 }
 
+void URLRequestHttpJob::NotifyBeforeSendProxyHeadersCallback(
+    const ProxyInfo* proxy_info) {
+  DCHECK(proxy_info);
+  DCHECK_NE(URLRequestStatus::CANCELED, GetStatus().status());
+  if (network_delegate()) {
+    network_delegate()->NotifyBeforeSendProxyHeaders(
+        request_,
+        proxy_info,
+        &request_info_.extra_headers);
+  }
+}
+
 void URLRequestHttpJob::NotifyHeadersComplete() {
   DCHECK(!response_info_);
 
@@ -430,6 +443,9 @@ void URLRequestHttpJob::StartTransactionInternal() {
       transaction_->SetBeforeNetworkStartCallback(
           base::Bind(&URLRequestHttpJob::NotifyBeforeNetworkStart,
                      base::Unretained(this)));
+      transaction_->SetBeforeProxyHeadersSentCallback(
+          base::Bind(&URLRequestHttpJob::NotifyBeforeSendProxyHeadersCallback,
+                     base::Unretained(this)));
 
       if (!throttling_entry_.get() ||
           !throttling_entry_->ShouldRejectRequest(*request_)) {