fuzzer fixes

gm/pictureshader.cpp

 /*
  * Copyright 2014 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"
 #include "SkPaint.h"
 #include "SkPicture.h"
 #include "SkPictureRecorder.h"
 #include "SkShader.h"
 
 static struct {
     SkShader::TileMode tmx;
     SkShader::TileMode tmy;
 } kTileConfigs[] = {
     { SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode },
     { SkShader::kRepeat_TileMode, SkShader::kClamp_TileMode  },
     { SkShader::kMirror_TileMode, SkShader::kRepeat_TileMode },
 };
 
 class PictureShaderGM : public skiagm::GM {
 public:
     PictureShaderGM(SkScalar tileSize, SkScalar sceneSize)
         : fTileSize(tileSize)
         , fSceneSize(sceneSize) {
+    }
 
-        // Build the picture.
+ protected:
+    void onOnceBeforeDraw() SK_OVERRIDE {
+       // Build the picture.
         SkPictureRecorder recorder;
-        SkCanvas* pictureCanvas = recorder.beginRecording(tileSize, tileSize, NULL, 0);
+        SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize, NULL, 0);
         this->drawTile(pictureCanvas);
         fPicture.reset(recorder.endRecording());
 
         // Build a reference bitmap.
-        fBitmap.allocN32Pixels(SkScalarCeilToInt(tileSize), SkScalarCeilToInt(tileSize));
+        fBitmap.allocN32Pixels(SkScalarCeilToInt(fTileSize), SkScalarCeilToInt(fTileSize));
         fBitmap.eraseColor(SK_ColorTRANSPARENT);
         SkCanvas bitmapCanvas(fBitmap);
         this->drawTile(&bitmapCanvas);
     }
 
-protected:
 
     SkString onShortName() SK_OVERRIDE {
         return SkString("pictureshader");
     }
 
     SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(1400, 1450);
     }
 
     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
@@ skipping 153 matching lines @@
     p.setColor(0xFF8BC34A);  // green
     canvas->drawPaint(p);
 
     canvas->clipRect(SkRect::MakeXYWH(0, 0, 400, 350));
     p.setColor(0xFFB6B6B6);  // gray
     canvas->drawPaint(p);
     p.setShader(shader.get());
 
     canvas->drawPaint(p);
 }