use colortype instead of config

src/effects/SkMorphologyImageFilter.cpp

Index: src/effects/SkMorphologyImageFilter.cpp
diff --git a/src/effects/SkMorphologyImageFilter.cpp b/src/effects/SkMorphologyImageFilter.cpp
index 8803f8aae39706388f1a6bee6305d9f1c4f028d8..19a9b68aa8d127724b28240660bf5f503a4accee 100644
--- a/src/effects/SkMorphologyImageFilter.cpp
+++ b/src/effects/SkMorphologyImageFilter.cpp
@@ -163,9 +163,7 @@ bool SkMorphologyImageFilter::filterImageGeneric(SkMorphologyImageFilter::Proc p
         return false;
     }
 
-    dst->setConfig(src.config(), bounds.width(), bounds.height());
-    dst->allocPixels();
-    if (!dst->getPixels()) {
+    if (!dst->allocPixels(src.info().makeWH(bounds.width(), bounds.height()))) {
         return false;
     }
 
@@ -190,8 +188,7 @@ bool SkMorphologyImageFilter::filterImageGeneric(SkMorphologyImageFilter::Proc p
     }
 
     SkBitmap temp;
-    temp.setConfig(dst->config(), dst->width(), dst->height());
-    if (!temp.allocPixels()) {
+    if (!temp.allocPixels(dst->info())) {
         return false;
     }