Refactor Parsing to remove compiler dependency

pkg/compiler/lib/src/closure.dart

 // Copyright (c) 2012, 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.
 
 library closureToClassMapper;
 
 import 'common.dart';
 import 'common/names.dart' show Identifiers;
-import 'common/resolution.dart' show Parsing, Resolution;
+import 'common/resolution.dart' show ParsingContext, Resolution;
 import 'common/tasks.dart' show CompilerTask;
 import 'compiler.dart' show Compiler;
 import 'constants/expressions.dart';
 import 'dart_types.dart';
 import 'elements/elements.dart';
 import 'elements/modelx.dart'
     show BaseFunctionElementX, ClassElementX, ElementX, LocalFunctionElementX;
 import 'elements/visitor.dart' show ElementVisitor;
 import 'js_backend/js_backend.dart' show JavaScriptBackend;
 import 'resolution/tree_elements.dart' show TreeElements;
@@ skipping 194 matching lines @@
     _closureFields.add(field);
     addMember(field, listener);
   }
 
   bool get hasNode => true;
 
   bool get isClosure => true;
 
   Token get position => node.getBeginToken();
 
-  Node parseNode(Parsing parsing) => node;
+  Node parseNode(ParsingContext parsing) => node;
 
   // A [ClosureClassElement] is nested inside a function or initializer in terms
   // of [enclosingElement], but still has to be treated as a top-level
   // element.
   bool get isTopLevel => true;
 
   get enclosingElement => methodElement;
 
   accept(ElementVisitor visitor, arg) {
     return visitor.visitClosureClassElement(this, arg);
@@ skipping 101 matching lines @@
   ClosureClassElement get closureClass => super.enclosingElement;
 
   MemberElement get memberContext {
     return closureClass.methodElement.memberContext;
   }
 
   bool get hasNode => expression.hasNode;
 
   FunctionExpression get node => expression.node;
 
-  FunctionExpression parseNode(Parsing parsing) => node;
+  FunctionExpression parseNode(ParsingContext parsing) => node;
 
   ResolvedAst get resolvedAst {
     return new ParsedResolvedAst(this, node, treeElements);
   }
 
   Element get analyzableElement => closureClass.methodElement.analyzableElement;
 
   accept(ElementVisitor visitor, arg) {
     return visitor.visitMethodElement(this, arg);
   }
@@ skipping 789 matching lines @@
 ///
 /// Move the below classes to a JS model eventually.
 ///
 abstract class JSEntity implements Entity {
   Entity get declaredEntity;
 }
 
 abstract class PrivatelyNamedJSEntity implements JSEntity {
   Entity get rootOfScope;
 }