Emit session-level WINDOW_UPDATEs less frequently.

net/spdy/spdy_stream.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/spdy/spdy_stream.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 316 matching lines @@
   DCHECK_LE(delta_window_size, kint32max - recv_window_size_);
 
   recv_window_size_ += delta_window_size;
   net_log_.AddEvent(
       NetLog::TYPE_HTTP2_STREAM_UPDATE_RECV_WINDOW,
       base::Bind(&NetLogSpdyStreamWindowUpdateCallback, stream_id_,
                  delta_window_size, recv_window_size_));
 
   unacked_recv_window_bytes_ += delta_window_size;
   if (unacked_recv_window_bytes_ >
-      session_->stream_initial_recv_window_size() / 2) {
+      session_->stream_max_recv_window_size() / 2) {
     session_->SendStreamWindowUpdate(
         stream_id_, static_cast<uint32>(unacked_recv_window_bytes_));
     unacked_recv_window_bytes_ = 0;
   }
 }
 
 void SpdyStream::DecreaseRecvWindowSize(int32 delta_window_size) {
   DCHECK(session_->IsStreamActive(stream_id_));
   DCHECK_GE(session_->flow_control_state(), SpdySession::FLOW_CONTROL_STREAM);
   DCHECK_GE(delta_window_size, 1);
@@ skipping 571 matching lines @@
       description = base::StringPrintf("Unknown state 0x%08X (%u)", state,
                                        state);
       break;
   }
   return description;
 }
 
 #undef STATE_CASE
 
 }  // namespace net