DM: make GPU tasks multithreaded again. Big refactor.

dm/DMCpuTask.cpp

-#include "DMCpuTask.h"
-#include "DMExpectationsTask.h"
-#include "DMPipeTask.h"
-#include "DMReplayTask.h"
-#include "DMSerializeTask.h"
-#include "DMTileGridTask.h"
-#include "DMUtil.h"
-#include "DMWriteTask.h"
-
-namespace DM {
-
-CpuTask::CpuTask(const char* config,
-                 Reporter* reporter,
-                 TaskRunner* taskRunner,
-                 const Expectations& expectations,
-                 skiagm::GMRegistry::Factory gmFactory,
-                 SkColorType colorType)
-    : Task(reporter, taskRunner)
-    , fGMFactory(gmFactory)
-    , fGM(fGMFactory(NULL))
-    , fName(UnderJoin(fGM->getName(), config))
-    , fExpectations(expectations)
-    , fColorType(colorType)
-    {}
-
-void CpuTask::draw() {
-    SkBitmap bitmap;
-    SetupBitmap(fColorType, fGM.get(), &bitmap);
-
-    SkCanvas canvas(bitmap);
-    canvas.concat(fGM->getInitialTransform());
-    fGM->draw(&canvas);
-    canvas.flush();
-
-#define SPAWN(ChildTask, ...) this->spawnChild(SkNEW_ARGS(ChildTask, (*this, __VA_ARGS__)))
-    SPAWN(ExpectationsTask, fExpectations, bitmap);
-
-    SPAWN(PipeTask, fGMFactory(NULL), bitmap, false, false);
-    SPAWN(PipeTask, fGMFactory(NULL), bitmap, true, false);
-    SPAWN(PipeTask, fGMFactory(NULL), bitmap, true, true);
-    SPAWN(ReplayTask, fGMFactory(NULL), bitmap, false);
-    SPAWN(ReplayTask, fGMFactory(NULL), bitmap, true);
-    SPAWN(SerializeTask, fGMFactory(NULL), bitmap);
-    SPAWN(TileGridTask, fGMFactory(NULL), bitmap, SkISize::Make(16,16));
-
-    SPAWN(WriteTask, bitmap);
-#undef SPAWN
-}
-
-bool CpuTask::shouldSkip() const {
-    if (kRGB_565_SkColorType == fColorType && (fGM->getFlags() & skiagm::GM::kSkip565_Flag)) {
-        return true;
-    }
-    if (fGM->getFlags() & skiagm::GM::kGPUOnly_Flag) {
-        return true;
-    }
-    return false;
-}
-
-}  // namespace DM