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

pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart

Index: pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
diff --git a/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart b/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
index 50f0058565aff5dbf5710b0be9fc89759ffa8980..0f99a4fb5f10070e129e18c3ebc375ceb5d2150b 100644
--- a/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
+++ b/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
@@ -6,6 +6,9 @@ library type_graph_inferrer;
 
 import 'dart:collection' show Queue, IterableBase;
 
+import '../common/names.dart'
+    show Identifiers,
+         Names;
 import '../compiler.dart'
     show Compiler;
 import '../constants/values.dart';
@@ -580,14 +583,14 @@ class TypeGraphInferrerEngine
    */
   final Set<Selector> _returnsListElementTypeSet = new Set<Selector>.from(
     <Selector>[
-      new Selector.getter('first', null),
-      new Selector.getter('last', null),
-      new Selector.getter('single', null),
-      new Selector.call('singleWhere', null, 1),
-      new Selector.call('elementAt', null, 1),
+      new Selector.getter(const PublicName('first')),
+      new Selector.getter(const PublicName('last')),
+      new Selector.getter(const PublicName('single')),
+      new Selector.call(const PublicName('singleWhere'), 1),
+      new Selector.call(const PublicName('elementAt'), 1),
       new Selector.index(),
-      new Selector.call('removeAt', null, 1),
-      new Selector.call('removeLast', null, 0)
+      new Selector.call(const PublicName('removeAt'), 1),
+      new Selector.call(const PublicName('removeLast'), 0)
     ]);
 
   bool returnsListElementType(Selector selector, TypeMask mask) {
@@ -727,8 +730,7 @@ class TypeGraphInferrerEngine
           // need to trace the call method here.
           assert(info.calledElement.isConstructor);
           ClassElement cls = info.calledElement.enclosingClass;
-          FunctionElement callMethod =
-              cls.lookupMember(Compiler.CALL_OPERATOR_NAME);
+          FunctionElement callMethod = cls.lookupMember(Identifiers.call);
           assert(invariant(cls, callMethod != null));
           Iterable<FunctionElement> elements = [callMethod];
           trace(elements, new ClosureTracerVisitor(elements, info, this));
@@ -794,8 +796,7 @@ class TypeGraphInferrerEngine
           }
         } else if (info is StaticCallSiteTypeInformation) {
           ClassElement cls = info.calledElement.enclosingClass;
-          FunctionElement callMethod =
-              cls.lookupMember(Compiler.CALL_OPERATOR_NAME);
+          FunctionElement callMethod = cls.lookupMember(Identifiers.call);
           print('${types.getInferredSignatureOf(callMethod)} for ${cls}');
         } else {
           print('${info.type} for some unknown kind of closure');
@@ -946,7 +947,7 @@ class TypeGraphInferrerEngine
                                   Selector selector,
                                   TypeMask mask,
                                   {bool remove, bool addToQueue: true}) {
-    if (callee.name == Compiler.NO_SUCH_METHOD) return;
+    if (callee.name == Identifiers.noSuchMethod_) return;
     if (callee.isField) {
       if (selector.isSetter) {
         ElementTypeInformation info = types.getInferredTypeOf(callee);
@@ -1261,7 +1262,7 @@ class TypeGraphInferrerEngine
    */
   TypeInformation typeOfElementWithSelector(Element element,
                                             Selector selector) {
-    if (element.name == Compiler.NO_SUCH_METHOD &&
+    if (element.name == Identifiers.noSuchMethod_ &&
         selector.name != element.name) {
       // An invocation can resolve to a [noSuchMethod], in which case
       // we get the return type of [noSuchMethod].