viz: Use a simple GpuMemoryBufferManager implementation.

components/viz/service/display_compositor/in_process_gpu_memory_buffer_manager.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 "components/viz/service/display_compositor/in_process_gpu_memory_buffer_manager.h"
+
+#include "gpu/ipc/client/gpu_memory_buffer_impl.h"
+#include "gpu/ipc/service/gpu_channel_manager.h"
+#include "gpu/ipc/service/gpu_memory_buffer_factory.h"
+
+namespace viz {
+
+InProcessGpuMemoryBufferManager::InProcessGpuMemoryBufferManager(
+    gpu::GpuChannelManager* channel_manager)
+    : client_id_(1), channel_manager_(channel_manager), weak_factory_(this) {
+  weak_ptr_ = weak_factory_.GetWeakPtr();
+}
+
+InProcessGpuMemoryBufferManager::~InProcessGpuMemoryBufferManager() {}
+
+std::unique_ptr<gfx::GpuMemoryBuffer>
+InProcessGpuMemoryBufferManager::CreateGpuMemoryBuffer(
+    const gfx::Size& size,
+    gfx::BufferFormat format,
+    gfx::BufferUsage usage,
+    gpu::SurfaceHandle surface_handle) {
+  gfx::GpuMemoryBufferId id(next_gpu_memory_id_++);
+  gfx::GpuMemoryBufferHandle buffer_handle =
+      channel_manager_->gpu_memory_buffer_factory()->CreateGpuMemoryBuffer(
+          id, size, format, usage, client_id_, surface_handle);
+  return gpu::GpuMemoryBufferImpl::CreateFromHandle(
+      buffer_handle, size, format, usage,
+      base::Bind(&InProcessGpuMemoryBufferManager::DestroyGpuMemoryBuffer,
+                 weak_ptr_, id, client_id_));
+}
+
+void InProcessGpuMemoryBufferManager::SetDestructionSyncToken(
+    gfx::GpuMemoryBuffer* buffer,
+    const gpu::SyncToken& sync_token) {
+  static_cast<gpu::GpuMemoryBufferImpl*>(buffer)->set_destruction_sync_token(
+      sync_token);
+}
+
+void InProcessGpuMemoryBufferManager::DestroyGpuMemoryBuffer(
+    gfx::GpuMemoryBufferId id,
+    int client_id,
+    const gpu::SyncToken& sync_token) {
+  channel_manager_->DestroyGpuMemoryBuffer(id, client_id, sync_token);
+}
+
+}  // namespace viz