Add flow control between renderer and GPU processes, and, on Mac OS X,...

chrome/gpu/gpu_channel.cc

 // Copyright (c) 2010 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 "chrome/gpu/gpu_channel.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
@@ skipping 65 matching lines @@
   }
 
   if (!channel_.get()) {
     delete message;
     return false;
   }
 
   return channel_->Send(message);
 }
 
+#if defined(OS_MACOSX)
+void GpuChannel::AcceleratedSurfaceBuffersSwapped(
+    int32 route_id, uint64 swap_buffers_count) {
+  GpuCommandBufferStub* stub = stubs_.Lookup(route_id);
+  if (stub == NULL)
+    return;
+  stub->AcceleratedSurfaceBuffersSwapped(swap_buffers_count);
+}
+#endif
+
 void GpuChannel::OnControlMessageReceived(const IPC::Message& msg) {
   IPC_BEGIN_MESSAGE_MAP(GpuChannel, msg)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_CreateViewCommandBuffer,
         OnCreateViewCommandBuffer)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_CreateOffscreenCommandBuffer,
         OnCreateOffscreenCommandBuffer)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_DestroyCommandBuffer,
         OnDestroyCommandBuffer)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_CreateVideoDecoder,
         OnCreateVideoDecoder)
@@ skipping 148 matching lines @@
       channel_name, IPC::Channel::MODE_SERVER, this, NULL,
       ChildProcess::current()->io_message_loop(), false,
       ChildProcess::current()->GetShutDownEvent()));
 
   return true;
 }
 
 std::string GpuChannel::GetChannelName() {
   return StringPrintf("%d.r%d", base::GetCurrentProcId(), renderer_id_);
 }