gpu: Remove gpu channel filter and queue from header.

media/gpu/ipc/service/media_gpu_channel.h

Index: media/gpu/ipc/service/media_gpu_channel.h
diff --git a/media/gpu/ipc/service/media_gpu_channel.h b/media/gpu/ipc/service/media_gpu_channel.h
index 589df0e2e161b3232fdf3bb49b1a68281466ed15..ba1258aee76e494f9a4b01c894dd4e2e2989906b 100644
--- a/media/gpu/ipc/service/media_gpu_channel.h
+++ b/media/gpu/ipc/service/media_gpu_channel.h
@@ -25,6 +25,7 @@ class GpuChannel;
 namespace media {
 
 class MediaGpuChannelDispatchHelper;
+class MediaGpuChannelFilter;
 
 class MediaGpuChannel : public IPC::Listener, public IPC::Sender {
  public:
@@ -53,9 +54,10 @@ class MediaGpuChannel : public IPC::Listener, public IPC::Sender {
                             IPC::Message* reply_message);
 
   gpu::GpuChannel* const channel_;
-  base::UnguessableToken channel_token_;
+  scoped_refptr<MediaGpuChannelFilter> filter_;
   std::unique_ptr<GpuJpegDecodeAccelerator> jpeg_decoder_;
   AndroidOverlayMojoFactoryCB overlay_factory_cb_;
+
   DISALLOW_COPY_AND_ASSIGN(MediaGpuChannel);
 };