Add counting of some GL calls

src/gpu/GrGpu.h

Index: src/gpu/GrGpu.h
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index 9ceb706db876bb0f743a894dd56a519d444a2faa..54fe471c88c2fceccbed9013337333277d8a4e72 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -327,6 +327,8 @@ public:
         return kDrawPath_DrawType == type || kDrawPaths_DrawType == type;
     }
 
+    GrContext::GPUStats* gpuStats() { return &fGPUStats; }
+
 protected:
     DrawType PrimTypeToDrawType(GrPrimitiveType type) {
         switch (type) {
@@ -364,6 +366,8 @@ protected:
 
     GrClipMaskManager           fClipMaskManager;
 
+    GrContext::GPUStats         fGPUStats;
+
     struct GeometryPoolState {
         const GrVertexBuffer* fPoolVertexBuffer;
         int                   fPoolStartVertex;