Refactor GpuVideoDecoder::Factories out of GpuVideoDecoder.

content/renderer/media/rtc_video_decoder.cc

Index: content/renderer/media/rtc_video_decoder.cc
diff --git a/content/renderer/media/rtc_video_decoder.cc b/content/renderer/media/rtc_video_decoder.cc
index 4a43f431395cbc78d898b61b2fb5784359575ae3..66284ce63ae8e99a963dc984977359c7d08ace63 100644
--- a/content/renderer/media/rtc_video_decoder.cc
+++ b/content/renderer/media/rtc_video_decoder.cc
@@ -68,7 +68,7 @@ RTCVideoDecoder::BufferData::BufferData() {}
 RTCVideoDecoder::BufferData::~BufferData() {}
 
 RTCVideoDecoder::RTCVideoDecoder(
-    const scoped_refptr<media::GpuVideoDecoder::Factories>& factories)
+    const scoped_refptr<media::GpuVideoDecoderFactories>& factories)
     : weak_factory_(this),
       weak_this_(weak_factory_.GetWeakPtr()),
       factories_(factories),
@@ -128,7 +128,7 @@ RTCVideoDecoder::~RTCVideoDecoder() {
 }
 
 scoped_ptr<RTCVideoDecoder> RTCVideoDecoder::Create(
-    const scoped_refptr<media::GpuVideoDecoder::Factories>& factories) {
+    const scoped_refptr<media::GpuVideoDecoderFactories>& factories) {
   scoped_ptr<RTCVideoDecoder> decoder(new RTCVideoDecoder(factories));
   decoder->vda_.reset(factories->CreateVideoDecodeAccelerator(
       media::VP8PROFILE_MAIN, decoder.get()));
@@ -394,7 +394,7 @@ scoped_refptr<media::VideoFrame> RTCVideoDecoder::CreateVideoFrame(
       visible_rect,
       natural_size,
       timestamp_ms,
-      base::Bind(&media::GpuVideoDecoder::Factories::ReadPixels,
+      base::Bind(&media::GpuVideoDecoderFactories::ReadPixels,
                  factories_,
                  pb.texture_id(),
                  decoder_texture_target_,