fuzzer fixes

gm/bitmapshader.cpp

 
 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "gm.h"
 
 #include "SkBitmap.h"
@@ skipping 23 matching lines @@
     SkCanvas canvas(*bm);
     canvas.drawCircle(10, 10, 10, circlePaint);
 }
 
 static void adopt_shader(SkPaint* paint, SkShader* shader) {
     paint->setShader(shader);
     SkSafeUnref(shader);
 }
 
 class BitmapShaderGM : public GM {
-public:
 
-    BitmapShaderGM() {
+protected:
+    void onOnceBeforeDraw() SK_OVERRIDE {
         this->setBGColor(SK_ColorGRAY);
         draw_bm(&fBitmap);
         draw_mask(&fMask);
     }
 
-protected:
     virtual SkString onShortName() {
         return SkString("bitmapshaders");
     }
 
     virtual SkISize onISize() {
         return SkISize::Make(150, 100);
     }
 
     virtual void onDraw(SkCanvas* canvas) {
         SkPaint paint;
@@ skipping 47 matching lines @@
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new BitmapShaderGM; }
 static GMRegistry reg(MyFactory);
 
 }