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