Remove last inlining restrictions.

sdk/lib/_internal/compiler/implementation/js_backend/backend.dart

Index: sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/js_backend/backend.dart	(revision 23069)
+++ sdk/lib/_internal/compiler/implementation/js_backend/backend.dart	(working copy)
@@ -321,7 +321,7 @@
     registerFieldType(fieldConstructorTypeMap, field, type);
   }
 
-  void registerFieldSetter(FunctionElement element, Element field, HType type) {
+  void registerFieldSetter(Element element, Element field, HType type) {
     HType initializerType = fieldInitializerTypeMap[field];
     HType constructorType = fieldConstructorTypeMap[field];
     HType setterType = fieldTypeMap[field];
@@ -1569,7 +1569,7 @@
     fieldTypes.registerFieldConstructor(field, type);
   }
 
-  void registerFieldSetter(FunctionElement element, Element field, HType type) {
+  void registerFieldSetter(Element element, Element field, HType type) {
     fieldTypes.registerFieldSetter(element, field, type);
   }