Emit session-level WINDOW_UPDATEs less frequently.

net/http/http_network_session.h

Index: net/http/http_network_session.h
diff --git a/net/http/http_network_session.h b/net/http/http_network_session.h
index 771a982af7b720d2efe25c7484d6a6834db6a9ce..682263cb4a215b345558309678a8d9c243f6daaf 100644
--- a/net/http/http_network_session.h
+++ b/net/http/http_network_session.h
@@ -94,7 +94,8 @@ class NET_EXPORT HttpNetworkSession
     //                protocols are disabled.  We should use some reasonable
     //                defaults.
     NextProtoVector next_protos;
-    size_t spdy_stream_initial_recv_window_size;
+    size_t spdy_session_max_recv_window_size;
+    size_t spdy_stream_max_recv_window_size;
     size_t spdy_initial_max_concurrent_streams;
     size_t spdy_max_concurrent_streams_limit;
     SpdySessionPool::TimeFunc time_func;