DM: duh, don't calculate digests unless we're going to look at them.

dm/DMCpuTask.cpp

Index: dm/DMCpuTask.cpp
diff --git a/dm/DMCpuTask.cpp b/dm/DMCpuTask.cpp
index 5534ba4a43c8baa1a152b86d261323a1085d9f21..c4eaa35783f04aca8fd6cc7a17cab724e8537304 100644
--- a/dm/DMCpuTask.cpp
+++ b/dm/DMCpuTask.cpp
@@ -33,14 +33,13 @@ void CpuTask::draw() {
     fGM->draw(&canvas);
     canvas.flush();
 
-    const skiagm::GmResultDigest digest(bitmap);
-    if (!meetsExpectations(fExpectations, digest)) {
+    if (!meetsExpectations(fExpectations, bitmap)) {
         this->fail();
     }
 
     if (FLAGS_replay) {
         this->spawnChild(SkNEW_ARGS(ReplayTask,
-                                   ("replay", *this, fGMFactory(NULL), digest, fConfig)));
+                                   ("replay", *this, fGMFactory(NULL), bitmap)));
     }
 }