Move instanced index buffer creation to flush time

src/gpu/GrGpu.h

Index: src/gpu/GrGpu.h
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index b2dbec65fb1566b5a74083c8e32865cc0400f1ae..3903af6344bd015f37c9227dc8a5d7a787d5c8ce 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -119,34 +119,6 @@ public:
     GrIndexBuffer* createIndexBuffer(size_t size, bool dynamic);
 
     /**
-     * Creates an index buffer for instance drawing with a specific pattern.
-     *
-     * @param pattern     the pattern to repeat
-     * @param patternSize size in bytes of the pattern
-     * @param reps        number of times to repeat the pattern
-     * @param vertCount   number of vertices the pattern references
-     * @param dynamic     hints whether the data will be frequently changed
-     *                    by either GrIndexBuffer::map() or
-     *                    GrIndexBuffer::updateData().
-     *
-     * @return The index buffer if successful, otherwise NULL.
-     */
-    GrIndexBuffer* createInstancedIndexBuffer(const uint16_t* pattern,
-                                              int patternSize,
-                                              int reps,
-                                              int vertCount,
-                                              bool isDynamic = false);
-
-    /**
-     * Returns an index buffer that can be used to render quads.
-     * Six indices per quad: 0, 1, 2, 0, 2, 3, etc.
-     * The max number of quads can be queried using GrIndexBuffer::maxQuads().
-     * Draw with kTriangles_GrPrimitiveType
-     * @ return the quad index buffer
-     */
-    const GrIndexBuffer* getQuadIndexBuffer() const;
-
-    /**
      * Resolves MSAA.
      */
     void resolveRenderTarget(GrRenderTarget* target);
@@ -520,8 +492,6 @@ private:
 
     ResetTimestamp                                                      fResetTimestamp;
     uint32_t                                                            fResetBits;
-    // these are mutable so they can be created on-demand
-    mutable GrIndexBuffer*                                              fQuadIndexBuffer;
     // To keep track that we always have at least as many debug marker adds as removes
     int                                                                 fGpuTraceMarkerCount;
     GrTraceMarkerSet                                                    fActiveTraceMarkers;