(NotForReview) Enable YUV video overlay on Skylake ChromeOS.

ui/gfx/mac/io_surface.cc

Index: ui/gfx/mac/io_surface.cc
diff --git a/ui/gfx/mac/io_surface.cc b/ui/gfx/mac/io_surface.cc
index c4a30c13c56c17fc0374e38c71a96f292f6783ab..8ea4142317476c09b64b9567c9a4910ca3c9f36c 100644
--- a/ui/gfx/mac/io_surface.cc
+++ b/ui/gfx/mac/io_surface.cc
@@ -54,6 +54,7 @@ int32_t BytesPerElement(gfx::BufferFormat format, int plane) {
     case gfx::BufferFormat::RGBA_4444:
     case gfx::BufferFormat::RGBX_8888:
     case gfx::BufferFormat::YVU_420:
+    case gfx::BufferFormat::YUYV_422:
       NOTREACHED();
       return 0;
   }
@@ -84,6 +85,7 @@ int32_t PixelFormat(gfx::BufferFormat format) {
     case gfx::BufferFormat::RGBA_4444:
     case gfx::BufferFormat::RGBX_8888:
     case gfx::BufferFormat::YVU_420:
+    case gfx::BufferFormat::YUYV_422:
       NOTREACHED();
       return 0;
   }