Added support for TimeStamp queries using QueryCounterEXT.

gpu/command_buffer/service/query_manager.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 GPU_COMMAND_BUFFER_SERVICE_QUERY_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_QUERY_MANAGER_H_
 
 #include <deque>
 #include <vector>
 #include "base/atomicops.h"
@@ skipping 51 matching lines @@
       return shm_offset_;
     }
 
     // Returns false if shared memory for sync is invalid.
     virtual bool Begin() = 0;
 
     // Returns false if shared memory for sync is invalid.
     virtual bool End(base::subtle::Atomic32 submit_count) = 0;
 
     // Returns false if shared memory for sync is invalid.
+    virtual bool QueryCounter(base::subtle::Atomic32 submit_count) = 0;
+
+    // Returns false if shared memory for sync is invalid.
     virtual bool Process(bool did_finish) = 0;
 
     virtual void Destroy(bool have_context) = 0;
 
     void AddCallback(base::Closure callback);
 
    protected:
     virtual ~Query();
 
     QueryManager* manager() const {
@@ skipping 85 matching lines @@
 
   // Removes a query info for the given query.
   void RemoveQuery(GLuint client_id);
 
   // Returns false if any query is pointing to invalid shared memory.
   bool BeginQuery(Query* query);
 
   // Returns false if any query is pointing to invalid shared memory.
   bool EndQuery(Query* query, base::subtle::Atomic32 submit_count);
 
+  // Returns false if any query is pointing to invalid shared memory.
+  bool QueryCounter(Query* query, base::subtle::Atomic32 submit_count);
+
   // Processes pending queries. Returns false if any queries are pointing
   // to invalid shared memory. |did_finish| is true if this is called as
   // a result of calling glFinish().
   bool ProcessPendingQueries(bool did_finish);
 
   // True if there are pending queries.
   bool HavePendingQueries();
 
   // Processes pending transfer queries. Returns false if any queries are
   // pointing to invalid shared memory.
@@ skipping 55 matching lines @@
   typedef base::hash_set<GLuint> GeneratedQueryIds;
   GeneratedQueryIds generated_query_ids_;
 
   // Queries waiting for completion.
   typedef std::deque<scoped_refptr<Query> > QueryQueue;
   QueryQueue pending_queries_;
 
   // Async pixel transfer queries waiting for completion.
   QueryQueue pending_transfer_queries_;
 
-  // Used for timer queries.
   scoped_refptr<gfx::GPUTimingClient> gpu_timing_client_;
 
   DISALLOW_COPY_AND_ASSIGN(QueryManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_QUERY_MANAGER_H_