viz: Convert a sync api in ServerGpuMemoryBufferManager into async.

services/ui/ws/gpu_client.cc

 // 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.
 
 #include "services/ui/ws/gpu_client.h"
 
 #include "components/viz/common/server_gpu_memory_buffer_manager.h"
 #include "services/ui/gpu/interfaces/gpu_service.mojom.h"
 
+namespace {
+
+void RunCallback(const ui::mojom::Gpu::CreateGpuMemoryBufferCallback& callback,
+                 const gfx::GpuMemoryBufferHandle& handle) {
+  callback.Run(handle);
+}
+
+}  // namespace
+
 namespace ui {
 namespace ws {
 
 GpuClient::GpuClient(
     int client_id,
     gpu::GPUInfo* gpu_info,
     viz::ServerGpuMemoryBufferManager* gpu_memory_buffer_manager,
     mojom::GpuService* gpu_service)
     : client_id_(client_id),
       gpu_info_(gpu_info),
@@ skipping 26 matching lines @@
       base::Bind(&GpuClient::OnGpuChannelEstablished,
                  weak_factory_.GetWeakPtr(), callback));
 }
 
 void GpuClient::CreateGpuMemoryBuffer(
     gfx::GpuMemoryBufferId id,
     const gfx::Size& size,
     gfx::BufferFormat format,
     gfx::BufferUsage usage,
     const mojom::Gpu::CreateGpuMemoryBufferCallback& callback) {
-  auto handle = gpu_memory_buffer_manager_->CreateGpuMemoryBufferHandle(
-      id, client_id_, size, format, usage, gpu::kNullSurfaceHandle);
-  callback.Run(handle);
+  gpu_memory_buffer_manager_->AllocateGpuMemoryBuffer(
+      id, client_id_, size, format, usage, gpu::kNullSurfaceHandle,
+      base::BindOnce(&RunCallback, callback));
 }
 
 void GpuClient::DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
                                        const gpu::SyncToken& sync_token) {
   gpu_memory_buffer_manager_->DestroyGpuMemoryBuffer(id, client_id_,
                                                      sync_token);
 }
 
 }  // namespace ws
 }  // namespace ui