Add media::VideoEncodeAccelerator with WebRTC integration

media/base/video_frame.cc

Index: media/base/video_frame.cc
diff --git a/media/base/video_frame.cc b/media/base/video_frame.cc
index de7440ae20cf386df0e2b0caa8a52ded697f5c26..8f211ef1c1ea9a567fbe41beb69ee27c6fa59f1f 100644
--- a/media/base/video_frame.cc
+++ b/media/base/video_frame.cc
@@ -170,11 +170,11 @@ size_t VideoFrame::NumPlanes(Format format) {
       return 1;
     case VideoFrame::YV12:
     case VideoFrame::YV16:
+    case VideoFrame::I420:
       return 3;
     case VideoFrame::YV12A:
       return 4;
     case VideoFrame::EMPTY:
-    case VideoFrame::I420:
     case VideoFrame::INVALID:
       break;
   }
@@ -323,9 +323,13 @@ int VideoFrame::rows(size_t plane) const {
     case YV16:
       return height;
 
-    case YV12:
     case YV12A:
-      if (plane == kYPlane || plane == kAPlane)
+      if (plane == kAPlane)
+        return height;
+    // fallthrough.
+    case YV12:
+    case I420:
+      if (plane == kYPlane)
         return height;
       return RoundUp(height, 2) / 2;