Turn on quilt mode in DM.

gm/pathopsinverse.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"
 #include "SkPath.h"
@@ skipping 32 matching lines @@
         void* pixels = temp.getPixels();
         return *(SkColor*) pixels;
     }
 
     void makePaint(SkPaint* paint, SkColor color) {
         paint->setAntiAlias(true);
         paint->setStyle(SkPaint::kFill_Style);
         paint->setColor(color);
     }
 
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;  // Only for 565.  8888 is fine.
+    }
+
     virtual SkString onShortName() SK_OVERRIDE {
         return SkString("pathopsinverse");
     }
 
     virtual SkISize onISize() SK_OVERRIDE {
         return make_isize(1200, 900);
     }
 
     virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         SkPath one, two;
@@ skipping 42 matching lines @@
     SkPaint fOpPaint[kReverseDifference_PathOp - kDifference_PathOp + 1];
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new PathOpsInverseGM; }
 static GMRegistry reg(MyFactory);
 
 }