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..d2808356111d86c56b19644a2f6a51d602c4ca2b 100644
--- a/media/base/video_frame.cc
+++ b/media/base/video_frame.cc
@@ -123,6 +123,7 @@ bool RequiresEvenSizeAllocation(VideoPixelFormat format) {
     case PIXEL_FORMAT_YUV444P12:
     case PIXEL_FORMAT_YV12A:
     case PIXEL_FORMAT_UYVY:
+    case PIXEL_FORMAT_I422:
       return true;
     case PIXEL_FORMAT_UNKNOWN:
       break;
@@ -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) {
@@ -527,6 +528,7 @@ size_t VideoFrame::NumPlanes(VideoPixelFormat format) {
     case PIXEL_FORMAT_YUV420P12:
     case PIXEL_FORMAT_YUV422P12:
     case PIXEL_FORMAT_YUV444P12:
+    case PIXEL_FORMAT_I422:
       return 3;
     case PIXEL_FORMAT_YV12A:
       return 4;
@@ -1029,6 +1031,7 @@ gfx::Size VideoFrame::SampleSize(VideoPixelFormat format, size_t plane) {
           return gfx::Size(1, 1);
 
         case PIXEL_FORMAT_YV16:
+        case PIXEL_FORMAT_I422:
         case PIXEL_FORMAT_YUV422P9:
         case PIXEL_FORMAT_YUV422P10:
         case PIXEL_FORMAT_YUV422P12:
@@ -1097,6 +1100,7 @@ int VideoFrame::BytesPerElement(VideoPixelFormat format, size_t plane) {
     case PIXEL_FORMAT_YV12A:
     case PIXEL_FORMAT_YV24:
     case PIXEL_FORMAT_Y8:
+    case PIXEL_FORMAT_I422:
       return 1;
     case PIXEL_FORMAT_MJPEG:
       return 0;