Leverage profile's http network session's HttpAuthCache to support proxy auth.

components/gcm_driver/gcm_client_impl.cc

Index: components/gcm_driver/gcm_client_impl.cc
diff --git a/components/gcm_driver/gcm_client_impl.cc b/components/gcm_driver/gcm_client_impl.cc
index e36d36c79735e46432bac2d1fb6764b0de917f43..897bb78ef1445b363fcbd3d95c31f04b1e9f6806 100644
--- a/components/gcm_driver/gcm_client_impl.cc
+++ b/components/gcm_driver/gcm_client_impl.cc
@@ -24,6 +24,7 @@
 #include "google_apis/gcm/protocol/checkin.pb.h"
 #include "google_apis/gcm/protocol/mcs.pb.h"
 #include "net/http/http_network_session.h"
+#include "net/http/http_transaction_factory.h"
 #include "net/url_request/url_request_context.h"
 #include "url/gurl.h"
 
@@ -276,11 +277,9 @@ void GCMClientImpl::Initialize(
   DCHECK(delegate);
 
   url_request_context_getter_ = url_request_context_getter;
-  const net::HttpNetworkSession::Params* network_session_params =
-      url_request_context_getter_->GetURLRequestContext()->
-          GetNetworkSessionParams();
-  DCHECK(network_session_params);
-  network_session_ = new net::HttpNetworkSession(*network_session_params);
+  network_session_ = url_request_context_getter_->GetURLRequestContext()
+                         ->http_transaction_factory()

[fgorski, 2014/07/08 16:51:33]

nit: you are moving the arrows from end of line to the next. If git cl format
does not complain I am ok with that, but please check.

+                         ->GetSession();
 
   chrome_build_info_ = chrome_build_info;