Sketch DM refactor.

dm/DMSerializeTask.cpp

-#include "DMSerializeTask.h"
-#include "DMUtil.h"
-#include "DMWriteTask.h"
-
-#include "SkCommandLineFlags.h"
-#include "SkPicture.h"
-#include "SkPixelRef.h"
-
-DEFINE_bool(serialize, true, "If true, run picture serialization tests via SkPictureData.");
-
-namespace DM {
-
-SerializeTask::SerializeTask(const Task& parent, skiagm::GM* gm, SkBitmap reference)
-    : CpuTask(parent)
-    , fName(UnderJoin(parent.name().c_str(), "serialize"))
-    , fGM(gm)
-    , fReference(reference)
-    {}
-
-void SerializeTask::draw() {
-    SkAutoTUnref<SkPicture> recorded(RecordPicture(fGM.get(), NULL/*no BBH*/));
-
-    SkDynamicMemoryWStream wStream;
-    recorded->serialize(&wStream);
-    SkAutoTUnref<SkStream> rStream(wStream.detachAsStream());
-    SkAutoTUnref<SkPicture> reconstructed(SkPicture::CreateFromStream(rStream));
-
-    SkBitmap bitmap;
-    AllocatePixels(fReference, &bitmap);
-    DrawPicture(*reconstructed, &bitmap);
-    if (!BitmapsEqual(bitmap, fReference)) {
-        this->fail();
-        this->spawnChild(SkNEW_ARGS(WriteTask, (*this, "GM", bitmap)));
-    }
-}
-
-bool SerializeTask::shouldSkip() const {
-    if (fGM->getFlags() & skiagm::GM::kSkipPicture_Flag) {
-        return true;
-    }
-    return !FLAGS_serialize;
-}
-
-}  // namespace DM