services/ui: Get rid of IPC::ChannelHandle type converter

services/ui/gpu/gpu_service_impl.cc

 // 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.
 
 #include "services/ui/gpu/gpu_service_impl.h"
 
 #include "services/shell/public/cpp/connection.h"
 #include "services/ui/common/gpu_type_converters.h"
 #include "services/ui/gpu/gpu_service_mus.h"
 
 namespace ui {
 
 namespace {
 
 void EstablishGpuChannelDone(
     const mojom::GpuService::EstablishGpuChannelCallback& callback,
     int32_t client_id,
-    const IPC::ChannelHandle& channel_handle) {
+    IPC::ChannelHandle* channel_handle) {
   // TODO(penghuang): Send the real GPUInfo to the client.
-  callback.Run(client_id, mojom::ChannelHandle::From(channel_handle),
+  mojo::MessagePipeHandle handle;
+  if (channel_handle)
+    handle = channel_handle->mojo_handle;
+  callback.Run(client_id,
+               mojo::ScopedMessagePipeHandle(handle),
                gpu::GPUInfo());
 }
 }
 
 GpuServiceImpl::GpuServiceImpl(
     mojo::InterfaceRequest<mojom::GpuService> request)
     : binding_(this, std::move(request)) {}
 
 GpuServiceImpl::~GpuServiceImpl() {}
 
@@ skipping 22 matching lines @@
     const mojom::GpuService::CreateGpuMemoryBufferCallback& callback) {
   NOTIMPLEMENTED();
 }
 
 void GpuServiceImpl::DestroyGpuMemoryBuffer(mojom::GpuMemoryBufferIdPtr id,
                                             const gpu::SyncToken& sync_token) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace ui