Turn on quilt mode in DM.

gm/stringart.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 "SkCanvas.h"
 #include "SkPath.h"
 
 // Reproduces https://code.google.com/p/chromium/issues/detail?id=279014
 
 static const int kWidth = 640;
 static const int kHeight = 480;
 static const SkScalar kAngle = 0.305f;
 
 // Renders a string art shape.
 // The particular shape rendered can be controlled by adjusting kAngle, from 0 to 1
 
 class StringArtGM : public skiagm::GM {
 public:
     StringArtGM() {}
 
 protected:
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+
     virtual SkString onShortName() {
         return SkString("stringart");
     }
 
     virtual SkISize onISize() {
         return SkISize::Make(kWidth, kHeight);
     }
 
     virtual void onDraw(SkCanvas* canvas) {
         SkScalar angle = kAngle*SK_ScalarPI + SkScalarHalf(SK_ScalarPI);
@@ skipping 21 matching lines @@
         paint.setColor(0xFF007700);
 
         canvas->drawPath(path, paint);
     }
 
 private:
     typedef GM INHERITED;
 };
 
 DEF_GM( return new StringArtGM; )