Handle use of fromEnvironment from serialized data.

pkg/compiler/lib/src/serialization/modelz.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.
 
 /// Implementation of the element model used for deserialiation.
 ///
 /// These classes are created by [ElementDeserializer] triggered by the
 /// [Deserializer].
 
 library dart2js.serialization.modelz;
@@ skipping 1139 matching lines @@
 }
 
 abstract class ConstructorElementZ extends DeserializedElementZ
     with
         AnalyzableElementMixin,
         AstElementMixinZ,
         ClassMemberMixin,
         FunctionTypedElementMixin,
         ParametersMixin,
         TypedElementMixin,
-        MemberElementMixin
+        MemberElementMixin,
+        ConstructorElementCommon
     implements
         ConstructorElement,
         // TODO(johnniwinther): Sort out whether a constructor is a method.
         MethodElement {
   ConstantConstructor _constantConstructor;
   ConstructorElement _effectiveTarget;
 
   ConstructorElementZ(ObjectDecoder decoder) : super(decoder);
 
   accept(ElementVisitor visitor, arg) {
     return visitor.visitConstructorElement(this, arg);
   }
 
   @override
   bool get isConst => _decoder.getBool(Key.IS_CONST);
 
   @override
   bool get isExternal => _decoder.getBool(Key.IS_EXTERNAL);
 
-  bool get isFromEnvironmentConstructor {
-    return name == 'fromEnvironment' &&
-        library.isDartCore &&
-        (enclosingClass.name == 'bool' ||
-            enclosingClass.name == 'int' ||
-            enclosingClass.name == 'String');
-  }
-
   ConstantConstructor get constantConstructor {
     if (isConst && _constantConstructor == null) {
       ObjectDecoder data =
           _decoder.getObject(Key.CONSTRUCTOR, isOptional: true);
       if (data == null) {
         assert(isFromEnvironmentConstructor || isExternal);
         return null;
       }
       _constantConstructor = ConstantConstructorDeserializer.deserialize(data);
     }
@@ skipping 208 matching lines @@
   @override
   bool get isEffectiveTargetMalformed => false;
 
   @override
   bool get isExternal => false;
 
   @override
   bool get isFromEnvironmentConstructor => false;
 
   @override
+  bool get isIntFromEnvironmentConstructor => false;
+
+  @override
+  bool get isBoolFromEnvironmentConstructor => false;
+
+  @override
+  bool get isStringFromEnvironmentConstructor => false;
+
+  @override
   bool get isRedirectingFactory => false;
 
   @override
   bool get isRedirectingGenerative => false;
 
   @override
   bool get isSynthesized => true;
 
   @override
   ElementKind get kind => ElementKind.GENERATIVE_CONSTRUCTOR;
@@ skipping 827 matching lines @@
   }
 
   @override
   ElementKind get kind => ElementKind.PREFIX;
 
   @override
   Element lookupLocalMember(String memberName) {
     return _unsupported('lookupLocalMember');
   }
 }