Reverting r12427

git-svn-id: http://skia.googlecode.com/svn/trunk@12428 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/dm/DMGpuTask.cpp b/dm/DMGpuTask.cpp
index 4d99356..d4c4254 100644
--- a/dm/DMGpuTask.cpp
+++ b/dm/DMGpuTask.cpp
@@ -1,6 +1,6 @@
 #include "DMGpuTask.h"
 
-#include "DMComparisonTask.h"
+#include "DMChecksumTask.h"
 #include "DMUtil.h"
 #include "DMWriteTask.h"
 #include "SkCommandLineFlags.h"
@@ -60,9 +60,7 @@
     gr->printCacheStats();
 #endif
 
-    // We offload checksum comparison to the main CPU threadpool.
-    // This cuts run time by about 30%.
-    this->spawnChild(SkNEW_ARGS(ComparisonTask, (*this, fExpectations, bitmap)));
+    this->spawnChild(SkNEW_ARGS(ChecksumTask, (*this, fExpectations, bitmap)));
     this->spawnChild(SkNEW_ARGS(WriteTask, (*this, bitmap)));
 }