DM: add --pipe

dm/DMCpuTask.cpp

Index: dm/DMCpuTask.cpp
diff --git a/dm/DMCpuTask.cpp b/dm/DMCpuTask.cpp
index f6edf23407946955ee0f979dc16ba85883159df1..7e6f909ff3a44c25062c97780aea11d3871f1f9c 100644
--- a/dm/DMCpuTask.cpp
+++ b/dm/DMCpuTask.cpp
@@ -1,4 +1,5 @@
 #include "DMCpuTask.h"
+#include "DMPipeTask.h"
 #include "DMReplayTask.h"
 #include "DMSerializeTask.h"
 #include "DMUtil.h"
@@ -33,6 +34,10 @@ void CpuTask::draw() {
         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)));