mojo: Struct traits for gpu buffer types.

services/ui/public/interfaces/gpu_memory_buffer.mojom

 // Copyright 2016 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.
 
 module ui.mojom;
 
-enum BufferFormat {
-  ATC,
-  ATCIA,
-  DXT1,
-  DXT5,
-  ETC1,
-  R_8,
-  RGBA_4444,
-  RGBX_8888,
-  RGBA_8888,
-  BGRX_8888,
-  BGRA_8888,
-  YUV_420,
-  YUV_420_BIPLANAR,
-  UYVY_422,
-  LAST = UYVY_422
-};
-
-enum BufferUsage {
-  GPU_READ,
-  SCANOUT,
-  GPU_READ_CPU_READ_WRITE,
-  GPU_READ_CPU_READ_WRITE_PERSISTENT,
-  LAST = GPU_READ_CPU_READ_WRITE_PERSISTENT
-};
-
 enum GpuMemoryBufferType {
   EMPTY,
   SHARED_MEMORY,
   IO_SURFACE,
   SURFACE_TEXTURE,
   OZONE_NATIVE_PIXMAP,
   LAST = OZONE_NATIVE_PIXMAP
 };
 
 struct GpuMemoryBufferId {
@@ skipping 11 matching lines @@
 
 struct GpuMemoryBufferHandle {
   GpuMemoryBufferType type;
   GpuMemoryBufferId id;
   handle buffer_handle;
   uint32 offset;
   int32 stride;
   NativePixmapHandle? native_pixmap_handle;
   // TODO(fsamuel): Add support for Machports.
 };