gpu: Add GpuFence framework.

content/child/child_gpu_memory_buffer_manager.cc

 // Copyright 2014 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/child/child_gpu_memory_buffer_manager.h"
 
 #include <memory>
 #include <utility>
 
+#include "base/memory/ptr_util.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/generic_shared_memory_id_generator.h"
+#include "gpu/ipc/client/gpu_fence_impl.h"
 #include "gpu/ipc/client/gpu_memory_buffer_impl.h"
 
 namespace content {
 namespace {
 
 void DeletedGpuMemoryBuffer(ThreadSafeSender* sender,
                             gfx::GpuMemoryBufferId id,
                             const gpu::SyncToken& sync_token) {
   TRACE_EVENT0("renderer",
                "ChildGpuMemoryBufferManager::DeletedGpuMemoryBuffer");
@@ skipping 55 matching lines @@
   return nullptr;
 }
 
 void ChildGpuMemoryBufferManager::SetDestructionSyncToken(
     gfx::GpuMemoryBuffer* buffer,
     const gpu::SyncToken& sync_token) {
   static_cast<gpu::GpuMemoryBufferImpl*>(buffer)->set_destruction_sync_token(
       sync_token);
 }
 
+std::unique_ptr<gfx::GpuFence> ChildGpuMemoryBufferManager::CreateGpuFence() {
+  gfx::GpuFenceHandle handle;
+  IPC::Message* message = new ChildProcessHostMsg_SyncCreateGpuFence(&handle);
+  bool success = sender_->Send(message);
+  if (!success)
+    return nullptr;
+  std::unique_ptr<gpu::GpuFenceImpl> fence(new gpu::GpuFenceImpl(handle));
+  return std::move(fence);
+}
+
+std::unique_ptr<gfx::GpuFence>
+ChildGpuMemoryBufferManager::CreateGpuFenceFromHandle(
+    const gfx::GpuFenceHandle& handle) {
+  NOTIMPLEMENTED();
+  return nullptr;
+}
+
+gfx::GpuFence* ChildGpuMemoryBufferManager::GpuFenceFromClientFence(
+    ClientFence fence) {
+  return gpu::GpuFenceImpl::FromClientFence(fence);
+}
+
 }  // namespace content