Add support for Rec709 color space videos in software YUV convert path.

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 acdc5a2475bbe8695d78fcfe745b40f24b93dd2a..0841728064effe732870577814cc294f2ad3856c 100644
--- a/media/base/video_frame.cc
+++ b/media/base/video_frame.cc
@@ -57,6 +57,7 @@ static gfx::Size SampleSize(VideoFrame::Format format, size_t plane) {
 
         case VideoFrame::YV12:
         case VideoFrame::YV12J:
+        case VideoFrame::YV12HD:
         case VideoFrame::I420:
         case VideoFrame::YV12A:
         case VideoFrame::NV12:
@@ -159,6 +160,8 @@ std::string VideoFrame::FormatToString(VideoFrame::Format format) {
       return "NV12";
     case VideoFrame::YV24:
       return "YV24";
+    case VideoFrame::YV12HD:
+      return "YV12HD";
   }
   NOTREACHED() << "Invalid videoframe format provided: " << format;
   return "";
@@ -201,6 +204,7 @@ bool VideoFrame::IsValidConfig(VideoFrame::Format format,
     case VideoFrame::I420:
     case VideoFrame::YV12A:
     case VideoFrame::NV12:
+    case VideoFrame::YV12HD:
     case VideoFrame::YV16:
       // Check that software-allocated buffer formats are aligned correctly and
       // not empty.
@@ -528,6 +532,7 @@ size_t VideoFrame::NumPlanes(Format format) {
     case VideoFrame::YV16:
     case VideoFrame::I420:
     case VideoFrame::YV12J:
+    case VideoFrame::YV12HD:
     case VideoFrame::YV24:
       return 3;
     case VideoFrame::YV12A:
@@ -591,7 +596,8 @@ static void ReleaseData(uint8* data) {
 
 void VideoFrame::AllocateYUV() {
   DCHECK(format_ == YV12 || format_ == YV16 || format_ == YV12A ||
-         format_ == I420 || format_ == YV12J || format_ == YV24);
+         format_ == I420 || format_ == YV12J || format_ == YV24 ||
+         format_ == YV12HD);
   static_assert(0 == kYPlane, "y plane data must be index 0");
 
   size_t data_size = 0;