chromeos: decode video into NV12 format instead of RGBA in vaapi decoder

ui/gfx/linux/client_native_pixmap_factory_dmabuf.cc

Index: ui/gfx/linux/client_native_pixmap_factory_dmabuf.cc
diff --git a/ui/gfx/linux/client_native_pixmap_factory_dmabuf.cc b/ui/gfx/linux/client_native_pixmap_factory_dmabuf.cc
index a91e50645fe50e971e647879c5ce6afb75296879..d92fc2cd4ef90bc907d424e93891cd16e742cab7 100644
--- a/ui/gfx/linux/client_native_pixmap_factory_dmabuf.cc
+++ b/ui/gfx/linux/client_native_pixmap_factory_dmabuf.cc
@@ -59,6 +59,9 @@ class ClientNativePixmapFactoryDmabuf : public ClientNativePixmapFactory {
                format == gfx::BufferFormat::RGBX_8888 ||
                format == gfx::BufferFormat::BGRA_8888 ||
                format == gfx::BufferFormat::BGRX_8888 ||
+               // TODO(dshwang): add YUV_420_BIPLANAR to SCANOUT when cros
+               // kernel supports NV12 overlay. crbug.com/683347
+               format == gfx::BufferFormat::YUV_420_BIPLANAR ||
                format == gfx::BufferFormat::YVU_420;
       case gfx::BufferUsage::SCANOUT:
         return format == gfx::BufferFormat::BGRX_8888 ||
@@ -78,6 +81,7 @@ class ClientNativePixmapFactoryDmabuf : public ClientNativePixmapFactory {
             format == gfx::BufferFormat::R_8 ||
             format == gfx::BufferFormat::RG_88 ||
 #endif
+            format == gfx::BufferFormat::YUV_420_BIPLANAR ||
             format == gfx::BufferFormat::BGRA_8888;
 #else
         return false;