Turn on quilt mode in DM.

dm/DMTileGridTask.h

-#ifndef DMTileGridTask_DEFINED
-#define DMTileGridTask_DEFINED
-
-#include "DMTask.h"
-#include "SkBitmap.h"
-#include "SkString.h"
-#include "SkTemplates.h"
-#include "gm.h"
-
-// Records a GM through an SkPicture, draws it in tiles, and compares against the reference bitmap.
-
-namespace DM {
-
-class TileGridTask : public CpuTask {
-
-public:
-    TileGridTask(const Task& parent,  // TileGridTask must be a child task.  Pass its parent here.
-                 skiagm::GM*,         // GM to run through a picture.  Takes ownership.
-                 SkBitmap reference,  // Bitmap to compare picture replay results to.
-                 SkISize tileSize);   // Tile size to use.
-
-    virtual void draw() SK_OVERRIDE;
-    virtual bool shouldSkip() const SK_OVERRIDE;
-    virtual SkString name() const SK_OVERRIDE { return fName; }
-
-private:
-    const SkString fName;
-    SkAutoTDelete<skiagm::GM> fGM;
-    const SkBitmap fReference;
-    const SkISize fTileSize;
-};
-
-}  // namespace DM
-
-#endif  // DMReplayTask_DEFINED