DM: Add --skps.

dm/DMReplayTask.h

Index: dm/DMReplayTask.h
diff --git a/dm/DMReplayTask.h b/dm/DMReplayTask.h
index 78bef0dfd8aae9399d1694e0066e24472188b088..de28172000d6eba391554e3ad0ac57543583be79 100644
--- a/dm/DMReplayTask.h
+++ b/dm/DMReplayTask.h
@@ -14,20 +14,24 @@ namespace DM {
 class ReplayTask : public CpuTask {
 
 public:
+    enum Mode {
+        kNormal_Mode,
+        kRTree_Mode,
+    };
     ReplayTask(const Task& parent,  // ReplayTask 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.
-               bool useRTree);      // Record with an RTree?
+               Mode);
 
     virtual void draw() SK_OVERRIDE;
     virtual bool shouldSkip() const SK_OVERRIDE;
     virtual SkString name() const SK_OVERRIDE { return fName; }
 
 private:
+    const bool fUseRTree;
     const SkString fName;
     SkAutoTDelete<skiagm::GM> fGM;
     const SkBitmap fReference;
-    const bool fUseRTree;
 };
 
 }  // namespace DM