Added a lock check for CommandBufferProxyImpl::OrderingBarrier().

gpu/ipc/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 "gpu/ipc/client/command_buffer_proxy_impl.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 222 matching lines @@
             std::make_pair(fence_sync_release, flush_id));
       }
     }
   }
 
   if (put_offset_changed)
     latency_info_.clear();
 }
 
 void CommandBufferProxyImpl::OrderingBarrier(int32_t put_offset) {
+  CheckLock();
   if (last_state_.error != gpu::error::kNoError)
     return;
 
   TRACE_EVENT1("gpu", "CommandBufferProxyImpl::OrderingBarrier", "put_offset",
                put_offset);
 
   bool put_offset_changed = last_barrier_put_offset_ != put_offset;
   last_barrier_put_offset_ = put_offset;
 
   if (channel_) {
@@ skipping 466 matching lines @@
 }
 
 void CommandBufferProxyImpl::InvalidGpuReplyOnClientThread() {
   std::unique_ptr<base::AutoLock> lock;
   if (lock_)
     lock.reset(new base::AutoLock(*lock_));
   OnDestroyed(gpu::error::kInvalidGpuMessage, gpu::error::kLostContext);
 }
 
 }  // namespace gpu