content/gpu: Simplify stub scheduling.

content/common/gpu/gpu_command_buffer_stub.h

 // 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.
 
 #ifndef CONTENT_COMMON_GPU_GPU_COMMAND_BUFFER_STUB_H_
 #define CONTENT_COMMON_GPU_GPU_COMMAND_BUFFER_STUB_H_
 
 #include <deque>
 #include <string>
 #include <vector>
@@ skipping 194 matching lines @@
   void OnSignalQuery(uint32 query, uint32 id);
 
   void OnSetClientHasMemoryAllocationChangedCallback(bool has_callback);
 
   void OnCreateImage(int32 id,
                      gfx::GpuMemoryBufferHandle handle,
                      gfx::Size size,
                      gfx::BufferFormat format,
                      uint32 internalformat);
   void OnDestroyImage(int32 id);
+  void OnCreateStreamTexture(uint32 texture_id,
+                             int32 stream_id,
+                             bool* succeeded);
 
   void OnCommandProcessed();
   void OnParseError();
-  void OnCreateStreamTexture(
-      uint32 texture_id, int32 stream_id, bool* succeeded);
+  void OnSchedulingChanged(bool scheduled);
 
   void ReportState();
 
   // Wrapper for GpuScheduler::PutChanged that sets the crash report URL.
   void PutChanged();
 
   // Poll the command buffer to execute work.
   void PollWork();
 
   // Whether this command buffer needs to be polled again in the future.
@@ skipping 39 matching lines @@
   // elide redundant work).
   bool last_memory_allocation_valid_;
   gpu::MemoryAllocation last_memory_allocation_;
 
   GpuWatchdog* watchdog_;
 
   base::ObserverList<DestructionObserver> destruction_observers_;
 
   // A queue of sync points associated with this stub.
   std::deque<uint32> sync_points_;
-  int sync_point_wait_count_;
+  bool waiting_for_sync_point_;
 
   bool delayed_work_scheduled_;
   uint32_t previous_processed_num_;
   base::TimeTicks last_idle_time_;
 
   scoped_refptr<gpu::PreemptionFlag> preemption_flag_;
 
   LatencyInfoCallback latency_info_callback_;
 
   GURL active_url_;
   size_t active_url_hash_;
 
   size_t total_gpu_memory_;
   scoped_ptr<WaitForCommandState> wait_for_token_;
   scoped_ptr<WaitForCommandState> wait_for_get_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuCommandBufferStub);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_GPU_COMMAND_BUFFER_STUB_H_