add missing SK_OVERRIDE

src/core/SkPicturePreroll.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkPicture.h"
 
@@ skipping 44 matching lines @@
     }
 
     void onDrawOval(const SkRect&, const SkPaint& paint) SK_OVERRIDE {
         this->handlePaint(paint);
     }
 
     void onDrawRRect(const SkRRect&, const SkPaint& paint) SK_OVERRIDE {
         this->handlePaint(paint);
     }
 
-    void onDrawPoints(PointMode, size_t, const SkPoint[], const SkPaint& paint) {
+    void onDrawPoints(PointMode, size_t, const SkPoint[], const SkPaint& paint) SK_OVERRIDE {
         this->handlePaint(paint);
     }
 
     void onDrawVertices(VertexMode, int, const SkPoint[], const SkPoint[], const SkColor[],
                         SkXfermode*, const uint16_t[], int, const SkPaint& paint) SK_OVERRIDE {
         this->handlePaint(paint);
     }
 
     void onDrawPath(const SkPath&, const SkPaint& paint) SK_OVERRIDE {
         this->handlePaint(paint);
@@ skipping 77 matching lines @@
     if (ibounds.isEmpty()) {
         return;
     }
 
     SkPrerollCanvas canvas(ibounds.width(), ibounds.height(), props);
 
     canvas.translate(-SkIntToScalar(ibounds.left()), -SkIntToScalar(ibounds.top()));
     canvas.drawPicture(this, initialMatrix, NULL);
 }