Track some changes to reference types (mostly Blink types moving to Oilpan).

Source/bindings/dart/scripts/templates/callback_interface_h.template

Index: Source/bindings/dart/scripts/templates/callback_interface_h.template
diff --git a/Source/bindings/dart/scripts/templates/callback_interface_h.template b/Source/bindings/dart/scripts/templates/callback_interface_h.template
index 9f42574c62d9c2604e548c0a7722a20d741848f4..056dfca660943ed5300a04af786fbd5ef0fa47e8 100644
--- a/Source/bindings/dart/scripts/templates/callback_interface_h.template
+++ b/Source/bindings/dart/scripts/templates/callback_interface_h.template
@@ -18,29 +18,29 @@ class {{dart_class}} : public {{cpp_class}}, public ActiveDOMCallback {
 public:
     typedef {{dart_class}} NativeType;
 
-    static PassOwnPtr<NativeType> create(Dart_Handle object, Dart_Handle& exception)
+    static NativeType* create(Dart_Handle object, Dart_Handle& exception)
     {
-        return adoptPtr(new {{dart_class}}(object, exception, DartUtilities::scriptExecutionContext()));
+        return new {{dart_class}}(object, exception, DartUtilities::scriptExecutionContext());
     }
 
-    static PassOwnPtr<NativeType> createWithNullCheck(Dart_Handle object, Dart_Handle& exception)
+    static NativeType* createWithNullCheck(Dart_Handle object, Dart_Handle& exception)
     {
         if (Dart_IsNull(object))
-            return PassOwnPtr<NativeType>();
+            return nullptr;
         return create(object, exception);
     }
 
-    static PassOwnPtr<NativeType> create(Dart_NativeArguments args, int idx, Dart_Handle& exception)
+    static NativeType* create(Dart_NativeArguments args, int idx, Dart_Handle& exception)
     {
         Dart_Handle object = Dart_GetNativeArgument(args, idx);
         return create(object, exception);
     }
 
-    static PassOwnPtr<NativeType> createWithNullCheck(Dart_NativeArguments args, int idx, Dart_Handle& exception)
+    static NativeType* createWithNullCheck(Dart_NativeArguments args, int idx, Dart_Handle& exception)
     {
         Dart_Handle object = Dart_GetNativeArgument(args, idx);
         if (Dart_IsNull(object))
-            return PassOwnPtr<NativeType>();
+            return nullptr;
         return create(object, exception);
     }