refactor DM::SetupBitmap

dm/DMPipeTask.cpp

 #include "DMPipeTask.h"
 #include "DMUtil.h"
 #include "DMWriteTask.h"
 
 #include "SamplePipeControllers.h"
 #include "SkCommandLineFlags.h"
 #include "SkGPipe.h"
 
 DEFINE_bool(pipe, true, "If true, check several pipe variants against the reference bitmap.");
 
@@ skipping 27 matching lines @@
                    Mode mode)
     : CpuTask(parent)
     , fFlags(get_flags(mode))
     , fName(UnderJoin(parent.name().c_str(), get_name(fFlags)))
     , fGM(gm)
     , fReference(reference)
     {}
 
 void PipeTask::draw() {
     SkBitmap bitmap;
-    SetupBitmap(fReference.colorType(), fGM.get(), &bitmap);
+    AllocatePixels(fReference, &bitmap);
 
     SkCanvas canvas(bitmap);
     PipeController pipeController(&canvas, &SkImageDecoder::DecodeMemory);
     SkGPipeWriter writer;
 
     SkCanvas* pipeCanvas = writer.startRecording(&pipeController,
                                                  fFlags,
                                                  bitmap.width(),
                                                  bitmap.height());
     pipeCanvas->concat(fGM->getInitialTransform());
@@ skipping 14 matching lines @@
         return true;
     }
     if (fFlags == SkGPipeWriter::kCrossProcess_Flag &&
         fGM->getFlags() & skiagm::GM::kSkipPipeCrossProcess_Flag) {
         return true;
     }
     return false;
 }
 
 }  // namespace DM