Remove SkNEW and SkDELETE macros

src/image/SkImage_Generator.cpp

Index: src/image/SkImage_Generator.cpp
diff --git a/src/image/SkImage_Generator.cpp b/src/image/SkImage_Generator.cpp
index 0f1fa3692c8e3dd7a88b46acdc74642555a16e54..4981f37c089bea4a9d9dbb1dede2a19adf153636 100644
--- a/src/image/SkImage_Generator.cpp
+++ b/src/image/SkImage_Generator.cpp
@@ -89,5 +89,5 @@ SkImage* SkImage::NewFromGenerator(SkImageGenerator* generator, const SkIRect* s
     if (!cache) {
         return nullptr;
     }
-    return SkNEW_ARGS(SkImage_Generator, (cache));
+    return new SkImage_Generator(cache);
 }