Turn on quilt mode in DM.

gm/colorfilters.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 "SkCanvas.h"
 #include "SkColorFilter.h"
@@ skipping 31 matching lines @@
 
 protected:
     virtual SkString onShortName() {
         return fName;
     }
 
     virtual SkISize onISize() {
         return SkISize::Make(640, 480);
     }
 
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+
     virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         SkRect r;
         r.setWH(600, 50);
         paint.setShader(make_shader(r))->unref();
 
         const struct {
             InstallPaint    fProc;
             uint32_t        fData0, fData1;
         } rec[] = {
@@ skipping 16 matching lines @@
 
 private:
     SkString fName;
     typedef GM INHERITED;
 };
 
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return SkNEW(ColorFiltersGM); )