Turn on quilt mode in DM.

gm/strokes.cpp

Index: gm/strokes.cpp
diff --git a/gm/strokes.cpp b/gm/strokes.cpp
index 861fd7635211997a7a77cc96e38aab3cd9649af4..81741693cfc765019bde77648b5b4b9ef2c7f96e 100644
--- a/gm/strokes.cpp
+++ b/gm/strokes.cpp
@@ -39,6 +39,10 @@ public:
     StrokesGM() {}
 
 protected:
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+
     virtual SkString onShortName() {
         return SkString("strokes_round");
     }
@@ -91,6 +95,10 @@ public:
     }
 
 protected:
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+
     virtual SkString onShortName() {
         return SkString("strokes_poly");
     }
@@ -188,6 +196,10 @@ public:
     Strokes3GM() {}
 
 protected:
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+
     virtual SkString onShortName() {
         return SkString("strokes3");
     }