Implementation of network level throttler.

net/http/http_network_session_peer.cc

Index: net/http/http_network_session_peer.cc
diff --git a/net/http/http_network_session_peer.cc b/net/http/http_network_session_peer.cc
index 2cfd3d63c752f2a9d36dd5ab6f789b77afeb63d1..c10795a5ea1538d40170b21d6842d008e544721a 100644
--- a/net/http/http_network_session_peer.cc
+++ b/net/http/http_network_session_peer.cc
@@ -4,6 +4,7 @@
 
 #include "net/http/http_network_session_peer.h"
 
+#include "net/base/network_throttle_manager.h"
 #include "net/http/http_network_session.h"
 #include "net/http/http_proxy_client_socket_pool.h"
 #include "net/proxy/proxy_service.h"
@@ -34,4 +35,9 @@ void HttpNetworkSessionPeer::SetHttpStreamFactoryForWebSocket(
   session_->http_stream_factory_for_websocket_.swap(http_stream_factory);
 }
 
+void HttpNetworkSessionPeer::SetNetworkStreamThrottler(
+    std::unique_ptr<NetworkThrottleManager> network_throttle_manager) {
+  session_->network_stream_throttler_.swap(network_throttle_manager);
+}
+
 }  // namespace net