Add ClosedWorld.elementEnvironment and remove Compiler.elementEnvironment

pkg/compiler/lib/src/js_emitter/code_emitter_task.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.js_emitter.code_emitter_task;
 
 import 'package:js_runtime/shared/embedded_names.dart' show JsBuiltin;
 
 import '../common.dart';
 import '../common/tasks.dart' show CompilerTask;
@@ skipping 164 matching lines @@
       metadataCollector = new MetadataCollector(
           compiler.options,
           compiler.reporter,
           compiler.deferredLoadTask,
           _emitter,
           backend.constants,
           backend.typeVariableCodegenAnalysis,
           backend.mirrorsData,
           backend.rtiEncoder);
       typeTestRegistry = new TypeTestRegistry(
-          codegenWorldBuilder, closedWorld, compiler.elementEnvironment);
+          codegenWorldBuilder, closedWorld, closedWorld.elementEnvironment);
     });
   }
 
   int assembleProgram(Namer namer, ClosedWorld closedWorld) {
     return measure(() {
       _finalizeRti();
       ProgramBuilder programBuilder = new ProgramBuilder(
           compiler.options,
           compiler.reporter,
-          compiler.elementEnvironment,
+          closedWorld.elementEnvironment,
           closedWorld.commonElements,
           compiler.types,
           compiler.deferredLoadTask,
           compiler.closureToClassMapper,
           compiler.codegenWorldBuilder,
           backend.nativeCodegenEnqueuer,
           closedWorld.backendUsage,
           backend.constants,
           closedWorld.nativeData,
           backend.rtiNeed,
@@ skipping 124 matching lines @@
   @override
   jsAst.PropertyAccess interceptorClassAccess(ClassEntity element) {
     return globalPropertyAccessForClass(element);
   }
 
   @override
   jsAst.PropertyAccess typeAccess(Entity element) {
     return globalPropertyAccessForType(element);
   }
 }