Update liftetime management of GpuClient

services/ui/ws/gpu_client.cc

Index: services/ui/ws/gpu_client.cc
diff --git a/services/ui/ws/gpu_client.cc b/services/ui/ws/gpu_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c0ec4e6b5286054068e08380c6c5e083a8394106
--- /dev/null
+++ b/services/ui/ws/gpu_client.cc
@@ -0,0 +1,67 @@
+// 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 "services/ui/common/server_gpu_memory_buffer_manager.h"
+#include "services/ui/gpu/interfaces/gpu_service.mojom.h"
+
+namespace ui {
+namespace ws {
+
+GpuClient::GpuClient(int client_id,
+                     gpu::GPUInfo* gpu_info,
+                     ServerGpuMemoryBufferManager* gpu_memory_buffer_manager,
+                     mojom::GpuService* gpu_service)
+    : client_id_(client_id),
+      gpu_info_(gpu_info),
+      gpu_memory_buffer_manager_(gpu_memory_buffer_manager),
+      gpu_service_(gpu_service),
+      weak_factory_(this) {
+  DCHECK(gpu_memory_buffer_manager_);
+  DCHECK(gpu_service_);
+}
+
+GpuClient::~GpuClient() {
+  gpu_memory_buffer_manager_->DestroyAllGpuMemoryBufferForClient(client_id_);
+}
+
+void GpuClient::OnGpuChannelEstablished(
+    const EstablishGpuChannelCallback& callback,
+    mojo::ScopedMessagePipeHandle channel_handle) {
+  callback.Run(client_id_, std::move(channel_handle), *gpu_info_);
+}
+
+// mojom::Gpu overrides:
+void GpuClient::EstablishGpuChannel(
+    const EstablishGpuChannelCallback& callback) {
+  // TODO(sad): crbug.com/617415 figure out how to generate a meaningful
+  // tracing id.
+  const uint64_t client_tracing_id = 0;
+  constexpr bool is_gpu_host = false;
+  gpu_service_->EstablishGpuChannel(
+      client_id_, client_tracing_id, is_gpu_host,
+      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);
+}
+
+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