DM: add --pipe

dm/DMCpuTask.cpp

 #include "DMCpuTask.h"
+#include "DMPipeTask.h"
 #include "DMReplayTask.h"
 #include "DMSerializeTask.h"
 #include "DMUtil.h"
 #include "DMWriteTask.h"
 
 namespace DM {
 
 CpuTask::CpuTask(const char* name,
                  Reporter* reporter,
                  TaskRunner* taskRunner,
@@ skipping 14 matching lines @@
 
     SkCanvas canvas(bitmap);
     canvas.concat(fGM->getInitialTransform());
     fGM->draw(&canvas);
     canvas.flush();
 
     if (!MeetsExpectations(fExpectations, bitmap)) {
         this->fail();
     }
 
+    this->spawnChild(SkNEW_ARGS(PipeTask, (*this, fGMFactory(NULL), bitmap, false, false)));
+    this->spawnChild(SkNEW_ARGS(PipeTask, (*this, fGMFactory(NULL), bitmap, true, false)));
+    this->spawnChild(SkNEW_ARGS(PipeTask, (*this, fGMFactory(NULL), bitmap, true, true)));
+
     this->spawnChild(SkNEW_ARGS(ReplayTask, (*this, fGMFactory(NULL), bitmap)));
     this->spawnChild(SkNEW_ARGS(SerializeTask, (*this, fGMFactory(NULL), bitmap)));
     this->spawnChild(SkNEW_ARGS(WriteTask, (*this, 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