Implement JsKernelToElementMap through KernelToElementMapBase

pkg/compiler/lib/src/js_backend/backend.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 js_backend.backend;
 
 import '../common.dart';
 import '../common/backend_api.dart'
     show ForeignResolver, NativeRegistry, ImpactTransformer;
 import '../common/codegen.dart' show CodegenWorkItem;
@@ skipping 18 matching lines @@
         Enqueuer,
         EnqueueTask,
         ResolutionEnqueuer,
         TreeShakingEnqueuerStrategy;
 import '../frontend_strategy.dart';
 import '../io/source_information.dart' show SourceInformationStrategy;
 import '../js/js.dart' as jsAst;
 import '../js/js.dart' show js;
 import '../js/rewrite_async.dart';
 import '../js_emitter/js_emitter.dart' show CodeEmitterTask;
+import '../js_emitter/sorter.dart' show Sorter;
 import '../kernel/task.dart';
 import '../library_loader.dart' show LoadedLibraries;
 import '../native/native.dart' as native;
 import '../native/resolver.dart';
 import '../ssa/ssa.dart' show SsaFunctionCompiler;
 import '../tracer.dart';
 import '../tree/tree.dart';
 import '../types/types.dart';
 import '../universe/call_structure.dart' show CallStructure;
 import '../universe/selector.dart' show Selector;
@@ skipping 1008 matching lines @@
 
       specialOperatorEqClasses
         ..add(commonElements.objectClass)
         ..add(commonElements.jsInterceptorClass)
         ..add(commonElements.jsNullClass);
     }
   }
 
   /// Called when the compiler starts running the codegen enqueuer. The
   /// [WorldImpact] of enabled backend features is returned.
-  WorldImpact onCodegenStart(
-      ClosedWorld closedWorld, CodegenWorldBuilder codegenWorldBuilder) {
+  WorldImpact onCodegenStart(ClosedWorld closedWorld,
+      CodegenWorldBuilder codegenWorldBuilder, Sorter sorter) {
     functionCompiler.onCodegenStart();
     _oneShotInterceptorData = new OneShotInterceptorData(
         closedWorld.interceptorData, closedWorld.commonElements);
     _namer = determineNamer(closedWorld, codegenWorldBuilder);
     tracer = new Tracer(closedWorld, namer, compiler);
     _rtiEncoder = _namer.rtiEncoder = new RuntimeTypesEncoderImpl(
         namer, closedWorld.elementEnvironment, closedWorld.commonElements);
-    emitter.createEmitter(namer, closedWorld, codegenWorldBuilder);
+    emitter.createEmitter(namer, closedWorld, codegenWorldBuilder, sorter);
     _codegenImpactTransformer = new CodegenImpactTransformer(
         compiler.options,
         closedWorld.elementEnvironment,
         closedWorld.commonElements,
         impacts,
         checkedModeHelpers,
         closedWorld.nativeData,
         closedWorld.backendUsage,
         rtiNeed,
         nativeCodegenEnqueuer,
@@ skipping 312 matching lines @@
 
   bool canUseAliasedSuperMember(MemberEntity member, Selector selector) {
     return !selector.isGetter;
   }
 
   /// Returns `true` if [member] is called from a subclass via `super`.
   bool isAliasedSuperMember(MemberEntity member) {
     return _aliasedSuperMembers.contains(member);
   }
 }