All strong mode cleaning of dart2js.

pkg/compiler/lib/src/elements/common.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Mixins that implement convenience methods on [Element] subclasses.
 
 library elements.common;
 
 import '../common/names.dart' show Identifiers, Names, Uris;
 import '../common_elements.dart' show CommonElements;
@@ skipping 485 matching lines @@
   void forEachConstructorBody(void f(ConstructorBodyElement member)) {
     constructorBodies.forEach(f);
   }
 }
 
 abstract class FunctionSignatureCommon implements FunctionSignature {
   ParameterStructure _parameterStructure;
 
   ResolutionDartType get returnType => type.returnType;
 
-  void forEachRequiredParameter(void function(Element parameter)) {
+  void forEachRequiredParameter(void function(FormalElement parameter)) {
     requiredParameters.forEach(function);
   }
 
-  void forEachOptionalParameter(void function(Element parameter)) {
+  void forEachOptionalParameter(void function(FormalElement parameter)) {
     optionalParameters.forEach(function);
   }
 
-  void forEachParameter(void function(Element parameter)) {
+  void forEachParameter(void function(FormalElement parameter)) {
     forEachRequiredParameter(function);
     forEachOptionalParameter(function);
   }
 
-  void orderedForEachParameter(void function(Element parameter)) {
+  void orderedForEachParameter(void function(FormalElement parameter)) {
     forEachRequiredParameter(function);
     orderedOptionalParameters.forEach(function);
   }
 
   int get parameterCount => requiredParameterCount + optionalParameterCount;
 
   /**
    * Check whether a function with this signature can be used instead of a
    * function with signature [signature] without causing a `noSuchMethod`
    * exception/call.
@@ skipping 139 matching lines @@
   @override
   bool get isBoolFromEnvironmentConstructor {
     return fromEnvironmentState == _FromEnvironmentState.BOOL;
   }
 
   @override
   bool get isStringFromEnvironmentConstructor {
     return fromEnvironmentState == _FromEnvironmentState.STRING;
   }
 }