Move common identifiers, names and selectors to a separate library.

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/names.dart' show
+    Identifiers;
 import 'common/tasks.dart' show
     CompilerTask;
 import 'compiler.dart' show
     Compiler;
 import 'constants/expressions.dart';
 import 'dart_types.dart';
 import 'diagnostics/diagnostic_listener.dart';
 import 'diagnostics/spannable.dart' show
     SpannableAssertionFailure;
 import 'elements/elements.dart';
@@ skipping 968 matching lines @@
   }
 
   JavaScriptBackend get backend => compiler.backend;
 
   ClosureClassMap globalizeClosure(FunctionExpression node,
                                    LocalFunctionElement element) {
     String closureName = computeClosureName(element);
     ClosureClassElement globalizedElement = new ClosureClassElement(
         node, closureName, compiler, element);
     FunctionElement callElement =
-        new SynthesizedCallMethodElementX(Compiler.CALL_OPERATOR_NAME,
+        new SynthesizedCallMethodElementX(Identifiers.call,
                                           element,
                                           globalizedElement);
-    backend.maybeMarkClosureAsNeededForReflection(globalizedElement, callElement, element);
+    backend.maybeMarkClosureAsNeededForReflection(
+        globalizedElement, callElement, element);
     MemberElement enclosing = element.memberContext;
     enclosing.nestedClosures.add(callElement);
     globalizedElement.addMember(callElement, compiler);
     globalizedElement.computeAllClassMembers(compiler);
     // The nested function's 'this' is the same as the one for the outer
     // function. It could be [null] if we are inside a static method.
     ThisLocal thisElement = closureData.thisLocal;
 
     return new ClosureClassMap(element, globalizedElement,
                                callElement, thisElement);
@@ skipping 110 matching lines @@
 
   String get name => typeVariable.name;
 
   int get hashCode => typeVariable.hashCode;
 
   bool operator ==(other) {
     if (other is! TypeVariableLocal) return false;
     return typeVariable == other.typeVariable;
   }
 }