Implement StreamTexture::BindTexImage.

content/common/gpu/client/gpu_channel_host.h

Index: content/common/gpu/client/gpu_channel_host.h
diff --git a/content/common/gpu/client/gpu_channel_host.h b/content/common/gpu/client/gpu_channel_host.h
index 81ddbffbcdbb529e38745623d111bde49e0a329e..fe36b6a93b7c545c256cbfa8d26f7c4819174532 100644
--- a/content/common/gpu/client/gpu_channel_host.h
+++ b/content/common/gpu/client/gpu_channel_host.h
@@ -90,6 +90,9 @@ class CONTENT_EXPORT GpuChannelHostFactory
       int32 surface_id,
       const GPUCreateCommandBufferConfig& init_params,
       int32 route_id) = 0;
+  virtual bool CreateStreamTexture(int32 image_id,
+                                   int32 route_id,
+                                   int32 stream_id) = 0;

[reveman, 2015/06/29 16:02:01]

hm, could this be part of the GpuControl interface instead?

We already have CreateImage and adding a CreateStreamTextureImage function seems
reasonable. 

[sivag, 2015/06/30 11:17:17]

As of now we have the CreateStreamTextureImage(int textureid) interface in
gpu_control.h(https://code.google.com/p/chromium/codesearch#chromium/src/gpu/command_buffer/client/gpu_control.h&l=80).
But this interacts with the gpu command buffer directly sends a message to the
gpu to create stream texture(
https://code.google.com/p/chromium/codesearch#chromium/src/content/common/gpu...)

But in this patch  we first send a host message to browser then forward it to
gpu and still we use the renderer context to do this.

What i mean is though we add it in gpu_control.h, there will be no caller as we
call this from renderer client context via browser?

Please advice on how to proceed here?

[sivag, 2015/07/16 14:24:58]

Done.

 };
 
 // Encapsulates an IPC channel between the client and one GPU process.
@@ -194,6 +197,8 @@ class GpuChannelHost : public IPC::Sender,
   // Generate a route ID guaranteed to be unique for this channel.
   int32 GenerateRouteID();
 
+  unsigned CreateStreamTexture(int32 image_id);
+
  private:
   friend class base::RefCountedThreadSafe<GpuChannelHost>;
   GpuChannelHost(GpuChannelHostFactory* factory,
@@ -278,6 +283,8 @@ class GpuChannelHost : public IPC::Sender,
   ProxyMap proxies_;
   ProxyFlushInfo flush_info_;
 
+  int command_buffer_routing_id_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuChannelHost);
 };