Revert of Revert of Remove threading from RendererGpuVideoAcceleratorFactories

content/renderer/media/rtc_video_encoder.h

Index: content/renderer/media/rtc_video_encoder.h
diff --git a/content/renderer/media/rtc_video_encoder.h b/content/renderer/media/rtc_video_encoder.h
index 4e36ece1c1dc364f6a0036859205d9ac0f96bd9f..4d27ff2f82640868a432c59362192c3e5de73d86 100644
--- a/content/renderer/media/rtc_video_encoder.h
+++ b/content/renderer/media/rtc_video_encoder.h
@@ -23,9 +23,13 @@
 
 }  // namespace base
 
+namespace media {
+
+class GpuVideoAcceleratorFactories;
+
+}  // namespace media
+
 namespace content {
-
-class RendererGpuVideoAcceleratorFactories;
 
 // RTCVideoEncoder uses a media::VideoEncodeAccelerator to implement a
 // webrtc::VideoEncoder class for WebRTC.  Internally, VEA methods are
@@ -41,7 +45,7 @@
   RTCVideoEncoder(
       webrtc::VideoCodecType type,
       media::VideoCodecProfile profile,
-      const scoped_refptr<RendererGpuVideoAcceleratorFactories>& gpu_factories);
+      const scoped_refptr<media::GpuVideoAcceleratorFactories>& gpu_factories);
   virtual ~RTCVideoEncoder();
 
   // webrtc::VideoEncoder implementation.  Tasks are posted to |impl_| using the
@@ -80,7 +84,7 @@
   const media::VideoCodecProfile video_codec_profile_;
 
   // Factory for creating VEAs, shared memory buffers, etc.
-  scoped_refptr<RendererGpuVideoAcceleratorFactories> gpu_factories_;
+  scoped_refptr<media::GpuVideoAcceleratorFactories> gpu_factories_;
 
   // webrtc::VideoEncoder encode complete callback.
   webrtc::EncodedImageCallback* encoded_image_callback_;