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

ui/gfx/linux/client_native_pixmap_factory_dmabuf.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/linux/client_native_pixmap_factory_dmabuf.h"
 
 #include <utility>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 60 matching lines @@
       case gfx::BufferUsage::GPU_READ_CPU_READ_WRITE:
       case gfx::BufferUsage::GPU_READ_CPU_READ_WRITE_PERSISTENT: {
 #if defined(OS_CHROMEOS)
         return
 #if defined(ARCH_CPU_X86_FAMILY)
             // Currently only Intel driver (i.e. minigbm and Mesa) supports R_8
             // and RG_88. crbug.com/356871
             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;
 #endif
       }
     }
     NOTREACHED();
     return false;
   }
   std::unique_ptr<ClientNativePixmap> ImportFromHandle(
@@ skipping 23 matching lines @@
   }
 
   DISALLOW_COPY_AND_ASSIGN(ClientNativePixmapFactoryDmabuf);
 };
 
 ClientNativePixmapFactory* CreateClientNativePixmapFactoryDmabuf() {
   return new ClientNativePixmapFactoryDmabuf();
 }
 
 }  // namespace gfx