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

patch from issue 167033002

BUG=skia:
R=reed@google.com

Author: reed@chromium.org

Review URL: https://codereview.chromium.org/168653002

git-svn-id: http://skia.googlecode.com/svn/trunk@13463 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/dm/DMSerializeTask.cpp b/dm/DMSerializeTask.cpp
index 3359f2e..7e45d49 100644
--- a/dm/DMSerializeTask.cpp
+++ b/dm/DMSerializeTask.cpp
@@ -29,7 +29,7 @@
     SkAutoTUnref<SkPicture> reconstructed(SkPicture::CreateFromStream(rStream));
 
     SkBitmap bitmap;
-    SetupBitmap(fReference.config(), fGM.get(), &bitmap);
+    SetupBitmap(fReference.colorType(), fGM.get(), &bitmap);
     DrawPicture(reconstructed, &bitmap);
     if (!BitmapsEqual(bitmap, fReference)) {
         this->fail();