Added method to synchronize command buffers within GpuControl.

content/common/gpu/client/command_buffer_proxy_impl.cc

 // Copyright (c) 2012 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/common/gpu/client/command_buffer_proxy_impl.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 437 matching lines @@
   params.image_release_count = image_fence_sync;
 
   if (!Send(new GpuCommandBufferMsg_CreateImage(route_id_, params)))
     return -1;
 
   if (image_fence_sync) {
     gpu::SyncToken sync_token(GetNamespaceID(), GetExtraCommandBufferData(),
                               GetCommandBufferID(), image_fence_sync);
 
     // Force a synchronous IPC to validate sync token.
-    channel_->ValidateFlushIDReachedServer(stream_id_, true);
+    EnsureWorkVisible();
     sync_token.SetVerifyFlush();
 
     gpu_memory_buffer_manager->SetDestructionSyncToken(gpu_memory_buffer,
                                                        sync_token);
   }
 
   return new_id;
 }
 
 void CommandBufferProxyImpl::DestroyImage(int32_t id) {
@@ skipping 38 matching lines @@
 }
 
 void CommandBufferProxyImpl::SetLock(base::Lock* lock) {
   lock_ = lock;
 }
 
 bool CommandBufferProxyImpl::IsGpuChannelLost() {
   return !channel_ || channel_->IsLost();
 }
 
+void CommandBufferProxyImpl::EnsureWorkVisible() {
+  channel_->ValidateFlushIDReachedServer(stream_id_, true);
+}
+
 gpu::CommandBufferNamespace CommandBufferProxyImpl::GetNamespaceID() const {
   return gpu::CommandBufferNamespace::GPU_IO;
 }
 
 uint64_t CommandBufferProxyImpl::GetCommandBufferID() const {
   return command_buffer_id_;
 }
 
 int32_t CommandBufferProxyImpl::GetExtraCommandBufferData() const {
   return stream_id_;
@@ skipping 241 matching lines @@
   }
 }
 
 void CommandBufferProxyImpl::OnUpdateVSyncParameters(base::TimeTicks timebase,
                                                      base::TimeDelta interval) {
   if (!update_vsync_parameters_completion_callback_.is_null())
     update_vsync_parameters_completion_callback_.Run(timebase, interval);
 }
 
 }  // namespace content