gpu: Thread-safe command buffer state lookup.

gpu/ipc/service/gpu_command_buffer_stub.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/service/gpu_command_buffer_stub.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 929 matching lines @@
   }
 
   gles2::MailboxManager* mailbox_manager =
       context_group_->mailbox_manager();
   if (mailbox_manager->UsesSync() && MakeCurrent()) {
     SyncToken sync_token(CommandBufferNamespace::GPU_IO, 0,
                               command_buffer_id_, release);
     mailbox_manager->PushTextureUpdates(sync_token);
   }
 
+  command_buffer_->SetReleaseCount(release);
   sync_point_client_->ReleaseFenceSync(release);
 }
 
 void GpuCommandBufferStub::OnDescheduleUntilFinished() {
   DCHECK(executor_->scheduled());
   DCHECK(executor_->HasPollingWork());
 
   executor_->SetScheduled(false);
   channel_->OnStreamRescheduled(stream_id_, false);
 }
@@ skipping 184 matching lines @@
       command_buffer_->GetLastState().error == error::kLostContext)
     return;
 
   command_buffer_->SetContextLostReason(error::kUnknown);
   if (decoder_)
     decoder_->MarkContextLost(error::kUnknown);
   command_buffer_->SetParseError(error::kLostContext);
 }
 
 }  // namespace gpu