Add accelerated video decoder interface, VP8 and H.264 implementations and hook up to V4L2SVDA.

media/filters/vp8_parser.h

Index: media/filters/vp8_parser.h
diff --git a/media/filters/vp8_parser.h b/media/filters/vp8_parser.h
index 6f85be90820d12af01a665f0f4396a33a68dad21..c7fe620ffd5751ee5eb9baf8f834f1a50d97a6bb 100644
--- a/media/filters/vp8_parser.h
+++ b/media/filters/vp8_parser.h
@@ -92,13 +92,13 @@ struct MEDIA_EXPORT Vp8FrameHeader {
   bool IsKeyframe() const { return key_frame == KEYFRAME; }
 
   enum GoldenRefreshMode {
-    kCopyLastToGolden = 1,
-    kCopyAltToGolden = 2,
+    COPY_LAST_TO_GOLDEN = 1,
+    COPY_ALT_TO_GOLDEN = 2,
   };
 
   enum AltRefreshMode {
-    kCopyLastToAlt = 1,
-    kCopyGoldenToAlt = 2,
+    COPY_LAST_TO_ALT = 1,
+    COPY_GOLDEN_TO_ALT = 2,
   };
 
   FrameType key_frame;