Added method to synchronize command buffers within GpuControl.

gpu/command_buffer/service/in_process_command_buffer.h

 // Copyright 2013 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 112 matching lines @@
                                      unsigned internalformat,
                                      unsigned usage) override;
   uint32_t InsertSyncPoint() override;
   uint32_t InsertFutureSyncPoint() override;
   void RetireSyncPoint(uint32_t sync_point) override;
   void SignalSyncPoint(uint32_t sync_point,
                        const base::Closure& callback) override;
   void SignalQuery(uint32_t query_id, const base::Closure& callback) override;
   void SetLock(base::Lock*) override;
   bool IsGpuChannelLost() override;
+  void EnsureWorkVisible() override;
   CommandBufferNamespace GetNamespaceID() const override;
   uint64_t GetCommandBufferID() const override;
   int32_t GetExtraCommandBufferData() const override;
   uint64_t GenerateFenceSyncRelease() override;
   bool IsFenceSyncRelease(uint64_t release) override;
   bool IsFenceSyncFlushed(uint64_t release) override;
   bool IsFenceSyncFlushReceived(uint64_t release) override;
   void SignalSyncToken(const SyncToken& sync_token,
                        const base::Closure& callback) override;
   bool CanWaitUnverifiedSyncToken(const SyncToken* sync_token) override;
@@ skipping 179 matching lines @@
   SyncPointManager* sync_point_manager_;  // Non-owning.
   scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache_;
   scoped_refptr<gpu::gles2::FramebufferCompletenessCache>
       framebuffer_completeness_cache_;
   DISALLOW_COPY_AND_ASSIGN(GpuInProcessThread);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_