Turn on quilt mode in DM.

gm/giantbitmap.cpp

 /*
  * Copyright 2011 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 "SkColorPriv.h"
@@ skipping 53 matching lines @@
         fMode = mode;
         fDoFilter = doFilter;
         fDoRotate = doRotate;
     }
 
     virtual ~GiantBitmapGM() {
         SkDELETE(fBM);
     }
 
 protected:
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        if (fDoFilter && fDoRotate && fMode != SkShader::kClamp_TileMode) {
+            return kSkipTiled_Flag;
+        }
+        return 0;
+    }
+
     virtual SkString onShortName() {
         SkString str("giantbitmap_");
         switch (fMode) {
             case SkShader::kClamp_TileMode:
                 str.append("clamp");
                 break;
             case SkShader::kRepeat_TileMode:
                 str.append("repeat");
                 break;
             case SkShader::kMirror_TileMode:
@@ skipping 59 matching lines @@
 static skiagm::GMRegistry reg010(G010);
 static skiagm::GMRegistry reg110(G110);
 static skiagm::GMRegistry reg210(G210);
 
 static skiagm::GMRegistry reg001(G001);
 static skiagm::GMRegistry reg101(G101);
 static skiagm::GMRegistry reg201(G201);
 static skiagm::GMRegistry reg011(G011);
 static skiagm::GMRegistry reg111(G111);
 static skiagm::GMRegistry reg211(G211);