Add a size parameter to SharedMemoryHandle.

ui/gfx/mojo/buffer_types_struct_traits.h

 // 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.
 
 #ifndef UI_GFX_MOJO_BUFFER_TYPES_STRUCT_TRAITS_H_
 #define UI_GFX_MOJO_BUFFER_TYPES_STRUCT_TRAITS_H_
 
 #include "ui/gfx/buffer_types.h"
 #include "ui/gfx/mojo/buffer_types.mojom.h"
 
@@ skipping 251 matching lines @@
 template <>
 struct StructTraits<gfx::mojom::GpuMemoryBufferHandleDataView,
                     gfx::GpuMemoryBufferHandle> {
   static gfx::GpuMemoryBufferType type(
       const gfx::GpuMemoryBufferHandle& handle) {
     return handle.type;
   }
   static gfx::GpuMemoryBufferId id(const gfx::GpuMemoryBufferHandle& handle) {
     return handle.id;
   }
-  static mojo::ScopedHandle shared_memory_handle(
+  static mojo::ScopedSharedBufferHandle shared_memory_handle(
       const gfx::GpuMemoryBufferHandle& handle);
   static uint32_t offset(const gfx::GpuMemoryBufferHandle& handle) {
     return handle.offset;
   }
   static uint32_t stride(const gfx::GpuMemoryBufferHandle& handle) {
     return handle.stride;
   }
   static const gfx::NativePixmapHandle& native_pixmap_handle(
       const gfx::GpuMemoryBufferHandle& handle);
   static mojo::ScopedHandle mach_port(const gfx::GpuMemoryBufferHandle& handle);
   static bool Read(gfx::mojom::GpuMemoryBufferHandleDataView data,
                    gfx::GpuMemoryBufferHandle* handle);
 };
 
 }  // namespace mojo
 
 #endif  // UI_GFX_MOJO_BUFFER_TYPES_STRUCT_TRAITS_H_