Add media::VideoEncodeAccelerator with WebRTC integration

content/common/gpu/gpu_channel.cc

Index: content/common/gpu/gpu_channel.cc
diff --git a/content/common/gpu/gpu_channel.cc b/content/common/gpu/gpu_channel.cc
index 5fe111e744a29fbd7d32e1c96288c93f53916aa9..1ca88f874d5b753e4a5a9188efb102499d37e551 100644
--- a/content/common/gpu/gpu_channel.cc
+++ b/content/common/gpu/gpu_channel.cc
@@ -20,6 +20,7 @@
 #include "base/timer/timer.h"
 #include "content/common/gpu/gpu_channel_manager.h"
 #include "content/common/gpu/gpu_messages.h"
+#include "content/common/gpu/media/gpu_video_encode_accelerator.h"
 #include "content/common/gpu/sync_point_manager.h"
 #include "content/public/common/content_switches.h"
 #include "crypto/hmac.h"
@@ -761,9 +762,12 @@ bool GpuChannel::OnControlMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(GpuChannel, msg)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_CreateOffscreenCommandBuffer,
-                                    OnCreateOffscreenCommandBuffer)
+                        OnCreateOffscreenCommandBuffer)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_DestroyCommandBuffer,
-                                    OnDestroyCommandBuffer)
+                        OnDestroyCommandBuffer)
+    IPC_MESSAGE_HANDLER(GpuChannelMsg_CreateVideoEncoder, OnCreateVideoEncoder)
+    IPC_MESSAGE_HANDLER(GpuChannelMsg_DestroyVideoEncoder,
+                        OnDestroyVideoEncoder)
 #if defined(OS_ANDROID)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_RegisterStreamTextureProxy,
                         OnRegisterStreamTextureProxy)
@@ -906,6 +910,26 @@ void GpuChannel::OnDestroyCommandBuffer(int32 route_id) {
   }
 }
 
+void GpuChannel::OnCreateVideoEncoder(int32* route_id) {
+  TRACE_EVENT0("gpu", "GpuChannel::OnCreateVideoEncoder");
+
+  *route_id = GenerateRouteID();
+  GpuVideoEncodeAccelerator* encoder =
+      new GpuVideoEncodeAccelerator(this, *route_id);
+  router_.AddRoute(*route_id, encoder);
+  video_encoders_.AddWithID(encoder, *route_id);
+}
+
+void GpuChannel::OnDestroyVideoEncoder(int32 route_id) {
+  TRACE_EVENT1(
+      "gpu", "GpuChannel::OnDestroyVideoEncoder", "route_id", route_id);
+  GpuVideoEncodeAccelerator* encoder = video_encoders_.Lookup(route_id);
+  if (!encoder)
+    return;
+  router_.RemoveRoute(route_id);
+  video_encoders_.Remove(route_id);
+}
+
 #if defined(OS_ANDROID)
 void GpuChannel::OnRegisterStreamTextureProxy(
     int32 stream_id, int32* route_id) {