Skeleton of DM

dm/DMComparisonTask.h

Index: dm/DMComparisonTask.h
diff --git a/dm/DMComparisonTask.h b/dm/DMComparisonTask.h
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+++ b/dm/DMComparisonTask.h
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+#ifndef DMComparisonTask_DEFINED
+#define DMComparisonTask_DEFINED
+
+#include "DMTask.h"
+#include "SkBitmap.h"
+#include "SkString.h"
+#include "gm_expectations.h"
+
+namespace DM {
+
+// We use ComparisonTask to move CPU-bound comparison work of GpuTasks back to
+// the main thread pool, where we probably have more threads available.
+
+class ComparisonTask : public Task {
+public:
+    ComparisonTask(const Task& parent, skiagm::Expectations, SkBitmap);
+
+    virtual void draw() SK_OVERRIDE;
+    virtual bool usesGpu() const SK_OVERRIDE { return false; }
+    virtual bool shouldSkip() const SK_OVERRIDE { return false; }
+    virtual SkString name() const SK_OVERRIDE { return fName; }
+
+private:
+    const SkString fName;
+    const skiagm::Expectations fExpectations;
+    const SkBitmap fBitmap;
+};
+
+}  // namespace DM
+
+#endif  // DMComparisonTask_DEFINED