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

pkg/compiler/lib/src/resolution/resolution.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 dart2js.resolution;
 
 import 'dart:collection' show Queue;
 
+import '../common/names.dart' show
+    Identifiers;
 import '../common/tasks.dart' show
     CompilerTask,
     DeferredAction;
 import '../compiler.dart' show
     Compiler;
 import '../compile_time_constants.dart' show
     ConstantCompiler;
 import '../constants/values.dart' show
     ConstantValue;
 import '../dart_types.dart';
@@ skipping 223 matching lines @@
         Iterable<MixinApplicationElement> mixinUses =
             compiler.world.allMixinUsesOf(enclosingClass);
         ClassElement mixin = enclosingClass;
         for (MixinApplicationElement mixinApplication in mixinUses) {
           checkMixinSuperUses(resolutionTree, mixinApplication, mixin);
         }
       }
 
       // TODO(9631): support noSuchMethod on native classes.
       if (Elements.isInstanceMethod(element) &&
-          element.name == Compiler.NO_SUCH_METHOD &&
+          element.name == Identifiers.noSuchMethod_ &&
           _isNativeClassOrExtendsNativeClass(enclosingClass)) {
         error(tree, MessageKind.NO_SUCH_METHOD_IN_NATIVE);
       }
 
       return registry.worldImpact;
     });
 
   }
 
   WorldImpact resolveMethodElement(FunctionElementX element) {
@@ skipping 346 matching lines @@
     element.forEachMember((_, Element member) {
       if (!member.isInstanceMember) {
         compiler.withCurrentElement(member, () {
           for (MetadataAnnotation metadata in member.metadata) {
             metadata.ensureResolved(compiler);
           }
         });
       }
     });
 
-    computeClassMember(element, Compiler.CALL_OPERATOR_NAME);
+    computeClassMember(element, Identifiers.call);
   }
 
   void computeClassMembers(ClassElement element) {
     MembersCreator.computeAllClassMembers(compiler, element);
   }
 
   void computeClassMember(ClassElement element, String name) {
     MembersCreator.computeClassMembersByName(compiler, element, name);
   }
 
@@ skipping 406 matching lines @@
   TreeElements get treeElements {
     assert(invariant(this, _treeElements !=null,
         message: "TreeElements have not been computed for $this."));
     return _treeElements;
   }
 
   void reuseElement() {
     _treeElements = null;
   }
 }