Change device factories to take SkImageInfo instead of SkBitmap::Config

dm/DMUtil.cpp

 #include "DMUtil.h"
 
 #include "SkPicture.h"
 
 namespace DM {
 
 SkString UnderJoin(const char* a, const char* b) {
     SkString s;
     s.appendf("%s_%s", a, b);
     return s;
 }
 
 void RecordPicture(skiagm::GM* gm, SkPicture* picture, uint32_t recordFlags) {
     const SkISize size = gm->getISize();
     SkCanvas* canvas = picture->beginRecording(size.width(), size.height(), recordFlags);
     canvas->concat(gm->getInitialTransform());
     gm->draw(canvas);
     canvas->flush();
     picture->endRecording();
 }
 
-void SetupBitmap(const SkBitmap::Config config, skiagm::GM* gm, SkBitmap* bitmap) {
+void SetupBitmap(const SkColorType ct, skiagm::GM* gm, SkBitmap* bitmap) {
     const SkISize size = gm->getISize();
-    bitmap->setConfig(config, size.width(), size.height());
-    bitmap->allocPixels();
+    bitmap->allocPixels(SkImageInfo::Make(size.width(), size.height(),
+                                          ct, kPremul_SkAlphaType));
     bitmap->eraseColor(0x00000000);
 }
 
 void DrawPicture(SkPicture* picture, SkBitmap* bitmap) {
     SkASSERT(picture != NULL);
     SkASSERT(bitmap != NULL);
     SkCanvas canvas(*bitmap);
     canvas.drawPicture(*picture);
     canvas.flush();
 }
 
 bool BitmapsEqual(const SkBitmap& a, const SkBitmap& b) {
     const SkAutoLockPixels lockA(a), lockB(b);
     return a.getSize() == b.getSize() && 0 == memcmp(a.getPixels(), b.getPixels(), b.getSize());
 }
 
 }  // namespace DM