refactor DM::SetupBitmap

dm/DMReplayTask.cpp

 #include "DMReplayTask.h"
 #include "DMWriteTask.h"
 #include "DMUtil.h"
 
 #include "SkBBHFactory.h"
 #include "SkCommandLineFlags.h"
 #include "SkPicture.h"
 
 DEFINE_bool(replay, true, "If true, run picture replay tests.");
 DEFINE_bool(rtree,  true, "If true, run picture replay tests with an rtree.");
@@ skipping 12 matching lines @@
     {}
 
 void ReplayTask::draw() {
     SkAutoTDelete<SkBBHFactory> factory;
     if (fUseRTree) {
         factory.reset(SkNEW(SkRTreeFactory));
     }
     SkAutoTUnref<SkPicture> recorded(RecordPicture(fGM.get(), 0, factory.get()));
 
     SkBitmap bitmap;
-    SetupBitmap(fReference.colorType(), fGM.get(), &bitmap);
+    AllocatePixels(fReference, &bitmap);
     DrawPicture(recorded, &bitmap);
     if (!BitmapsEqual(bitmap, fReference)) {
         this->fail();
         this->spawnChild(SkNEW_ARGS(WriteTask, (*this, bitmap)));
     }
 }
 
 bool ReplayTask::shouldSkip() const {
     if (fGM->getFlags() & skiagm::GM::kSkipPicture_Flag) {
         return true;
     }
 
     if (FLAGS_rtree && fUseRTree) {
         return false;
     }
     if (FLAGS_replay && !fUseRTree) {
         return false;
     }
     return true;
 }
 
 }  // namespace DM