Add counting of some GL calls

src/gpu/GrGpu.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGpu_DEFINED
 #define GrGpu_DEFINED
 
@@ skipping 322 matching lines @@
         kDrawTriangles_DrawType,
         kStencilPath_DrawType,
         kDrawPath_DrawType,
         kDrawPaths_DrawType,
     };
 
     static bool IsPathRenderingDrawType(DrawType type) {
         return kDrawPath_DrawType == type || kDrawPaths_DrawType == type;
     }
 
+#if GR_GPU_STATS
+    virtual const GrContext::GPUStats& gpuStats() const = 0;

[bsalomon, 2014/09/17 18:50:16]

Why does this have to be virtual?

+#endif
+
 protected:
     DrawType PrimTypeToDrawType(GrPrimitiveType type) {
         switch (type) {
             case kTriangles_GrPrimitiveType:
             case kTriangleStrip_GrPrimitiveType:
             case kTriangleFan_GrPrimitiveType:
                 return kDrawTriangles_DrawType;
             case kPoints_GrPrimitiveType:
                 return kDrawPoints_DrawType;
             case kLines_GrPrimitiveType:
@@ skipping 165 matching lines @@
     // counts number of uses of vertex/index pool in the geometry stack
     int                                                                 fVertexPoolUseCnt;
     int                                                                 fIndexPoolUseCnt;
     // these are mutable so they can be created on-demand
     mutable GrIndexBuffer*                                              fQuadIndexBuffer;
 
     typedef GrDrawTarget INHERITED;
 };
 
 #endif