[media]: Replace LUMINANCE_F16 by R16 for 9/10-bit h264 videos.

components/viz/common/resources/resource_format.h

 // Copyright 2013 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.
 
 #ifndef COMPONENTS_VIZ_COMMON_RESOURCES_RESOURCE_FORMAT_H_
 #define COMPONENTS_VIZ_COMMON_RESOURCES_RESOURCE_FORMAT_H_
 
 #include "base/logging.h"
 #include "ui/gfx/buffer_types.h"
 
 // TODO(prashant.n): Including third_party/khronos/GLES2/gl2.h causes
 // redefinition errors as macros/functions defined in it conflict with
 // macros/functions defined in ui/gl/gl_bindings.h. (http://crbug.com/512833).
 typedef unsigned int GLenum;
 
 namespace viz {
 
 // Keep in sync with arrays below.
 enum ResourceFormat {
   RGBA_8888,
   RGBA_4444,
   BGRA_8888,
   ALPHA_8,
   LUMINANCE_8,
   RGB_565,
   ETC1,
   RED_8,
   LUMINANCE_F16,
   RGBA_F16,
-  RESOURCE_FORMAT_MAX = RGBA_F16,
+  R16_EXT,
+  RESOURCE_FORMAT_MAX = R16_EXT,
 };
 
 }  // namespace viz
 
 #endif  // COMPONENTS_VIZ_COMMON_RESOURCES_RESOURCE_FORMAT_H_