Create special surfaces according to original device (not always in N32)

tests/SpecialImageTest.cpp

Index: tests/SpecialImageTest.cpp
diff --git a/tests/SpecialImageTest.cpp b/tests/SpecialImageTest.cpp
index ba0eb58f4eb1a930ce9f4ef7beddcba5297b7cb7..abe72cbeb95015444be818a5112d325d64e0ee97 100644
--- a/tests/SpecialImageTest.cpp
+++ b/tests/SpecialImageTest.cpp
@@ -85,9 +85,8 @@ static void test_image(const sk_sp<SkSpecialImage>& img, skiatest::Reporter* rep
 
     //--------------
     // Test that draw restricts itself to the subset
-    SkImageInfo info = SkImageInfo::MakeN32(kFullSize, kFullSize, kOpaque_SkAlphaType);
-
-    sk_sp<SkSpecialSurface> surf(img->makeSurface(info));
+    sk_sp<SkSpecialSurface> surf(img->makeSurface(SkIRect::MakeWH(kFullSize, kFullSize),
+                                                  kOpaque_SkAlphaType));
 
     SkCanvas* canvas = surf->getCanvas();