content: Use mus client-lib's gpu-service from renderers.

content/browser/gpu/gpu_client.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 "content/browser/gpu/gpu_client.h"
+
+#include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
+#include "content/browser/gpu/gpu_process_host.h"
+#include "content/common/child_process_host_impl.h"
+#include "content/public/browser/browser_thread.h"
+#include "gpu/ipc/client/gpu_channel_host.h"
+#include "gpu/ipc/client/gpu_memory_buffer_impl.h"
+#include "gpu/ipc/client/gpu_memory_buffer_impl_shared_memory.h"
+
+namespace content {
+
+GpuClient::GpuClient(int render_process_id)
+    : render_process_id_(render_process_id), weak_factory_(this) {
+  bindings_.set_connection_error_handler(
+      base::Bind(&GpuClient::OnError, base::Unretained(this)));
+}
+
+GpuClient::~GpuClient() {
+  bindings_.CloseAllBindings();
+  OnError();
+}
+
+void GpuClient::Add(ui::mojom::GpuRequest request) {
+  bindings_.AddBinding(this, std::move(request));
+}
+
+void GpuClient::OnError() {
+  if (!bindings_.empty())
+    return;
+  BrowserGpuMemoryBufferManager* gpu_memory_buffer_manager =
+      BrowserGpuMemoryBufferManager::current();
+  if (gpu_memory_buffer_manager)
+    gpu_memory_buffer_manager->ProcessRemoved(render_process_id_);
+}
+
+void GpuClient::OnEstablishGpuChannel(
+    const EstablishGpuChannelCallback& callback,
+    const IPC::ChannelHandle& channel,
+    const gpu::GPUInfo& gpu_info) {
+  mojo::ScopedMessagePipeHandle channel_handle;
+  channel_handle.reset(channel.mojo_handle);
+  callback.Run(render_process_id_, std::move(channel_handle), gpu_info);
+}
+
+void GpuClient::OnCreateGpuMemoryBuffer(
+    const CreateGpuMemoryBufferCallback& callback,
+    const gfx::GpuMemoryBufferHandle& handle) {
+  callback.Run(handle);
+}
+
+void GpuClient::EstablishGpuChannel(
+    const EstablishGpuChannelCallback& callback) {
+  GpuProcessHost* host =
+      GpuProcessHost::Get(GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED);
+  if (!host) {
+    OnEstablishGpuChannel(callback, IPC::ChannelHandle(), gpu::GPUInfo());
+    return;
+  }
+
+  bool preempts = false;
+  bool allow_view_command_buffers = false;
+  bool allow_real_time_streams = false;
+  host->EstablishGpuChannel(
+      render_process_id_,
+      ChildProcessHostImpl::ChildProcessUniqueIdToTracingProcessId(
+          render_process_id_),
+      preempts, allow_view_command_buffers, allow_real_time_streams,
+      base::Bind(&GpuClient::OnEstablishGpuChannel, weak_factory_.GetWeakPtr(),
+                 callback));
+}
+
+void GpuClient::CreateGpuMemoryBuffer(
+    gfx::GpuMemoryBufferId id,
+    const gfx::Size& size,
+    gfx::BufferFormat format,
+    gfx::BufferUsage usage,
+    const ui::mojom::Gpu::CreateGpuMemoryBufferCallback& callback) {
+  DCHECK(BrowserGpuMemoryBufferManager::current());
+
+  base::CheckedNumeric<int> bytes = size.width();
+  bytes *= size.height();
+  if (!bytes.IsValid()) {
+    OnCreateGpuMemoryBuffer(callback, gfx::GpuMemoryBufferHandle());
+    return;
+  }
+
+  BrowserGpuMemoryBufferManager::current()
+      ->AllocateGpuMemoryBufferForChildProcess(
+          id, size, format, usage, render_process_id_,
+          base::Bind(&GpuClient::OnCreateGpuMemoryBuffer,
+                     weak_factory_.GetWeakPtr(), callback));
+}
+
+void GpuClient::DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
+                                       const gpu::SyncToken& sync_token) {
+  DCHECK(BrowserGpuMemoryBufferManager::current());
+
+  BrowserGpuMemoryBufferManager::current()->ChildProcessDeletedGpuMemoryBuffer(
+      id, render_process_id_, sync_token);
+}
+
+}  // namespace content