Make skia.mojom.Bitmap use shared buffer

ui/gfx/image/mojo/image.mojom

 // Copyright 2017 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 gfx.mojom;
 
-// Mojo transport for a SkBitmap via shared buffer.
-// TODO: Merge into bitmap.mojom in skia and maybe share pixel buffer directly
-//       to make less copies.
-struct SharedBufferSkBitmap {
-  // Shared buffer handle to hold a serialized SkBitmap.
-  handle<shared_buffer> shared_buffer_handle;
+import "skia/public/interfaces/bitmap.mojom";
 
-  // Byte size of the shared buffer.
-  uint64 buffer_byte_size;
-};
-
-// Mojo transport for an ImageSkiaRep using SharedBufferSkBitmap.
+// Mojo transport for an ImageSkiaRep.
 struct ImageSkiaRep {
   // Transport of the bitmap in this representation.
-  SharedBufferSkBitmap bitmap;
+  skia.mojom.Bitmap bitmap;
 
   // Corresponding scale of the bitmap or 0 if unscaled.
   float scale;
 };
 
-// Mojo transport for an ImageSkia via shared buffer. Note that transporting an
-// ImageSkia over mojo will load all of its image representations for supported
-// scales.
+// Mojo transport for an ImageSkia. Note that transporting an ImageSkia over
+// mojo will load all of its image representations for supported scales.
 struct ImageSkia {
   array<ImageSkiaRep> image_reps;
 };