Revert of Sketch DM refactor.

dm/DMPipeTask.h

+#ifndef DMPipeTask_DEFINED
+#define DMPipeTask_DEFINED
+
+#include "DMTask.h"
+#include "SkBitmap.h"
+#include "SkString.h"
+#include "SkTemplates.h"
+#include "gm.h"
+
+// Sends a GM through a pipe, draws it, and compares against the reference bitmap.
+
+namespace DM {
+
+class PipeTask : public CpuTask {
+
+public:
+    enum Mode {
+        kInProcess_Mode,
+        kCrossProcess_Mode,
+        kSharedAddress_Mode,
+    };
+
+    PipeTask(const Task& parent,        // PipeTask must be a child task.  Pass its parent here.
+             skiagm::GM*,               // GM to run through a pipe.  Takes ownership.
+             SkBitmap reference,        // Bitmap to compare pipe results to.
+             Mode);
+
+    void draw() SK_OVERRIDE;
+    bool shouldSkip() const SK_OVERRIDE;
+    SkString name() const SK_OVERRIDE { return fName; }
+
+private:
+    const uint32_t fFlags;
+    const SkString fName;
+    SkAutoTDelete<skiagm::GM> fGM;
+    const SkBitmap fReference;
+};
+
+}  // namespace DM
+
+#endif  // DMPipeTask_DEFINED