media: Introduce Y8 and Y16 video pixel format

cc/resources/video_resource_updater.cc

Index: cc/resources/video_resource_updater.cc
diff --git a/cc/resources/video_resource_updater.cc b/cc/resources/video_resource_updater.cc
index 79e117e229ba2c6a601a32d13f131aecd5198e69..e56c3853fbe383d95bcf46d4f5d6f6615e02e738 100644
--- a/cc/resources/video_resource_updater.cc
+++ b/cc/resources/video_resource_updater.cc
@@ -87,6 +87,8 @@ VideoFrameExternalResources::ResourceType ResourceTypeForVideoFrame(
     case media::PIXEL_FORMAT_YUV420P12:
     case media::PIXEL_FORMAT_YUV422P12:
     case media::PIXEL_FORMAT_YUV444P12:
+    case media::PIXEL_FORMAT_Y8:
+    case media::PIXEL_FORMAT_Y16:
     case media::PIXEL_FORMAT_UNKNOWN:
       break;
   }
@@ -337,6 +339,7 @@ VideoFrameExternalResources VideoResourceUpdater::CreateForSoftwarePlanes(
     case media::PIXEL_FORMAT_RGB32:
     case media::PIXEL_FORMAT_MJPEG:
     case media::PIXEL_FORMAT_MT21:
+    case media::PIXEL_FORMAT_Y8:
       bits_per_channel = 8;
       break;
     case media::PIXEL_FORMAT_YUV420P9:
@@ -354,8 +357,14 @@ VideoFrameExternalResources VideoResourceUpdater::CreateForSoftwarePlanes(
     case media::PIXEL_FORMAT_YUV444P12:
       bits_per_channel = 12;
       break;
+    case media::PIXEL_FORMAT_Y16:
+      bits_per_channel = 16;
+      break;
   }
 
+  // TODO(dshwang): support PIXEL_FORMAT_Y16. crbug.com/624436
+  DCHECK_NE(bits_per_channel, 16);
+
   // Only YUV software video frames are supported.
   if (!media::IsYuvPlanar(input_frame_format)) {
     NOTREACHED() << media::VideoPixelFormatToString(input_frame_format);