Added support for Time Elapsed queries through the command buffer.

gpu/command_buffer/client/query_tracker.h

Index: gpu/command_buffer/client/query_tracker.h
diff --git a/gpu/command_buffer/client/query_tracker.h b/gpu/command_buffer/client/query_tracker.h
index b66556b5e7e7af9ad996cae9d20dce97831b8f97..abd2f5d331e4bdeb6cfe19d7b0500a766a2f0c68 100644
--- a/gpu/command_buffer/client/query_tracker.h
+++ b/gpu/command_buffer/client/query_tracker.h
@@ -135,7 +135,7 @@ class GLES2_IMPL_EXPORT QueryTracker {
 
     bool CheckResultsAvailable(CommandBufferHelper* helper);
 
-    uint32 GetResult() const;
+    uint64 GetResult() const;
 
    private:
     friend class QueryTracker;
@@ -152,7 +152,7 @@ class GLES2_IMPL_EXPORT QueryTracker {
     int32 token_;
     uint32 flush_count_;
     uint64 client_begin_time_us_; // Only used for latency query target.
-    uint32 result_;
+    uint64 result_;
   };
 
   QueryTracker(MappedMemoryManager* manager);