Revert of Move instanced index buffer creation to flush time

src/gpu/GrOvalRenderer.h

Index: src/gpu/GrOvalRenderer.h
diff --git a/src/gpu/GrOvalRenderer.h b/src/gpu/GrOvalRenderer.h
index 57ce2a5dfe056174d9cc6e0386e09443bc02e313..f31aa69bb2d0d34e93064923517503d5469e2a2c 100644
--- a/src/gpu/GrOvalRenderer.h
+++ b/src/gpu/GrOvalRenderer.h
@@ -23,6 +23,16 @@
 class GrOvalRenderer : public SkRefCnt {
 public:
     SK_DECLARE_INST_COUNT(GrOvalRenderer)
+
+    GrOvalRenderer(GrGpu* gpu)
+        : fGpu(gpu)
+        , fRRectIndexBuffer(NULL)
+        , fStrokeRRectIndexBuffer(NULL) {}
+    ~GrOvalRenderer() {
+        this->reset();
+    }
+
+    void reset();
 
     bool drawOval(GrDrawTarget*,
                   GrPipelineBuilder*,
@@ -69,6 +79,10 @@
                     const SkRect& circle,
                     const SkStrokeRec& stroke);
 
+    GrGpu*         fGpu;
+    GrIndexBuffer* fRRectIndexBuffer;
+    GrIndexBuffer* fStrokeRRectIndexBuffer;
+
     typedef SkRefCnt INHERITED;
 };