Revert of Sketch DM refactor.

dm/DMWriteTask.h

+#ifndef DMWriteTask_DEFINED
+#define DMWriteTask_DEFINED
+
+#include "DMTask.h"
+#include "SkBitmap.h"
+#include "SkStream.h"
+#include "SkString.h"
+#include "SkTArray.h"
+
+
+// Writes a bitmap to a file.
+
+namespace DM {
+
+class WriteTask : public CpuTask {
+
+public:
+    WriteTask(const Task& parent,      // WriteTask must be a child task.
+              const char* sourceType,  // E.g. "GM", "SKP".  For humans.
+              SkBitmap bitmap);        // Bitmap to encode to PNG and write to disk.
+
+    // Takes ownership of SkStreamAsset
+    WriteTask(const Task& parent,      // WriteTask must be a child task.
+              const char* sourceType,  // E.g. "GM", "SKP".  For humans.
+              SkStreamAsset* data,     // Pre-encoded data to write to disk.
+              const char* ext);        // File extension.
+
+    void draw() SK_OVERRIDE;
+    bool shouldSkip() const SK_OVERRIDE;
+    SkString name() const SK_OVERRIDE;
+
+private:
+    SkTArray<SkString> fSuffixes;
+    const SkString fBaseName;
+    const SkString fSourceType;
+    const SkBitmap fBitmap;
+    SkAutoTDelete<SkStreamAsset> fData;
+    const char* fExtension;
+
+    void makeDirOrFail(SkString dir);
+};
+
+}  // namespace DM
+
+#endif  // DMWriteTask_DEFINED