Added method to synchronize command buffers within GpuControl.

gpu/command_buffer/tests/gl_manager.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 "gpu/command_buffer/tests/gl_manager.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 #include <stddef.h>
@@ skipping 481 matching lines @@
 
 void GLManager::SetLock(base::Lock*) {
   NOTIMPLEMENTED();
 }
 
 bool GLManager::IsGpuChannelLost() {
   NOTIMPLEMENTED();
   return false;
 }
 
+void GLManager::EnsureWorkVisible() {
+  // This is only relevant for out-of-process command buffers.
+}
+
 gpu::CommandBufferNamespace GLManager::GetNamespaceID() const {
   return gpu::CommandBufferNamespace::IN_PROCESS;
 }
 
 uint64_t GLManager::GetCommandBufferID() const {
   return command_buffer_id_;
 }
 
 int32_t GLManager::GetExtraCommandBufferData() const {
   return 0;
@@ skipping 18 matching lines @@
 void GLManager::SignalSyncToken(const gpu::SyncToken& sync_token,
                                 const base::Closure& callback) {
   NOTIMPLEMENTED();
 }
 
 bool GLManager::CanWaitUnverifiedSyncToken(const gpu::SyncToken* sync_token) {
   return false;
 }
 
 }  // namespace gpu