Turn on quilt mode in DM.

gm/samplerstress.cpp

 /*
  * Copyright 2012 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 "SkShader.h"
@@ skipping 10 matching lines @@
     SamplerStressGM()
     : fTextureCreated(false)
     , fShader(NULL)
     , fMaskFilter(NULL) {
     }
 
     virtual ~SamplerStressGM() {
     }
 
 protected:
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+
     virtual SkString onShortName() {
         return SkString("samplerstress");
     }
 
     virtual SkISize onISize() {
         return make_isize(640, 480);
     }
 
     /**
      * Create a red & green stripes on black texture
@@ skipping 102 matching lines @@
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new SamplerStressGM; }
 static GMRegistry reg(MyFactory);
 
 }