Make full_emitter parts into libraries

pkg/compiler/lib/src/js_emitter/full_emitter/interceptor_emitter.dart

 // Copyright (c) 2013, 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.
 
-part of dart2js.js_emitter.full_emitter;
+library dart2js.js_emitter.full_emitter.interceptor_emitter;
+
+import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames;
+import '../../elements/elements.dart'
+    show
+    ClassElement,
+    MethodElement;
+import '../../js/js.dart' as jsAst;
+import '../../js/js.dart' show js;
+import '../../world.dart' show ClosedWorld;
+import '../js_emitter.dart' hide Emitter, EmitterFactory;
+import '../model.dart';
+import 'emitter.dart';
 
 class InterceptorEmitter extends CodeEmitterHelper {
   final ClosedWorld closedWorld;
   final Set<jsAst.Name> interceptorInvocationNames = new Set<jsAst.Name>();
 
   InterceptorEmitter(this.closedWorld);
 
   void recordMangledNameOfMemberMethod(MethodElement member, jsAst.Name name) {
     if (backend.isInterceptedMethod(member)) {
       interceptorInvocationNames.add(name);
@@ skipping 80 matching lines @@
    */
   jsAst.Statement buildTypeToInterceptorMap(Program program) {
     jsAst.Expression array = program.typeToInterceptorMap;
     if (array == null) return js.comment("Empty type-to-interceptor map.");
 
     jsAst.Expression typeToInterceptorMap = emitter
         .generateEmbeddedGlobalAccess(embeddedNames.TYPE_TO_INTERCEPTOR_MAP);
     return js.statement('# = #', [typeToInterceptorMap, array]);
   }
 }