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

dm/DMCpuTask.cpp

 #include "DMCpuTask.h"
 #include "DMReplayTask.h"
 #include "DMUtil.h"
 #include "SkCommandLineFlags.h"
 
 DEFINE_bool(replay, false, "If true, run replay tests for each CpuTask.");
 // TODO(mtklein): add the other various options
 
 namespace DM {
 
@@ skipping 15 matching lines @@
     SkBitmap bitmap;
     bitmap.setConfig(fConfig, fGM->width(), fGM->height());
     bitmap.allocPixels();
     bitmap.eraseColor(0x00000000);
     SkCanvas canvas(bitmap);
 
     canvas.concat(fGM->getInitialTransform());
     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)));
     }
 }
 
 bool CpuTask::shouldSkip() const {
     if (SkBitmap::kRGB_565_Config == fConfig && (fGM->getFlags() & skiagm::GM::kSkip565_Flag)) {
         return true;
     }
     if (fGM->getFlags() & skiagm::GM::kGPUOnly_Flag) {
         return true;
     }
     return false;
 }
 
 }  // namespace DM