Add PIXEL_FORMAT_I422.

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 f2d11bd2e131acd7bb0b85b003f3d9703ef50ecd..e274a0b8ce6c7f3e9a271683da115441de5167a3 100644
--- a/media/base/video_frame.cc
+++ b/media/base/video_frame.cc
@@ -107,6 +107,7 @@ bool RequiresEvenSizeAllocation(VideoPixelFormat format) {
     case PIXEL_FORMAT_NV21:
     case PIXEL_FORMAT_MT21:
     case PIXEL_FORMAT_I420:
+    case PIXEL_FORMAT_I422:
     case PIXEL_FORMAT_MJPEG:
     case PIXEL_FORMAT_YUY2:
     case PIXEL_FORMAT_YV12:
@@ -157,7 +158,7 @@ bool VideoFrame::IsValidConfig(VideoPixelFormat format,
     return true;
 
   // Make sure new formats are properly accounted for in the method.
-  static_assert(PIXEL_FORMAT_MAX == 26,
+  static_assert(PIXEL_FORMAT_MAX == 27,
                 "Added pixel format, please review IsValidConfig()");
 
   if (format == PIXEL_FORMAT_UNKNOWN) {
@@ -515,6 +516,7 @@ size_t VideoFrame::NumPlanes(VideoPixelFormat format) {
     case PIXEL_FORMAT_MT21:
       return 2;
     case PIXEL_FORMAT_I420:
+    case PIXEL_FORMAT_I422:
     case PIXEL_FORMAT_YV12:
     case PIXEL_FORMAT_YV16:
     case PIXEL_FORMAT_YV24:
@@ -1028,6 +1030,7 @@ gfx::Size VideoFrame::SampleSize(VideoPixelFormat format, size_t plane) {
         case PIXEL_FORMAT_Y16:
           return gfx::Size(1, 1);
 
+        case PIXEL_FORMAT_I422:
         case PIXEL_FORMAT_YV16:
         case PIXEL_FORMAT_YUV422P9:
         case PIXEL_FORMAT_YUV422P10:
@@ -1093,6 +1096,7 @@ int VideoFrame::BytesPerElement(VideoPixelFormat format, size_t plane) {
     }
     case PIXEL_FORMAT_YV12:
     case PIXEL_FORMAT_I420:
+    case PIXEL_FORMAT_I422:
     case PIXEL_FORMAT_YV16:
     case PIXEL_FORMAT_YV12A:
     case PIXEL_FORMAT_YV24: