Move native and js interop properties from the element model to the JS backend

pkg/compiler/lib/src/common/codegen.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.common.codegen;
 
 import '../common.dart';
 import '../compiler.dart' show
     Compiler;
 import '../constants/values.dart' show
@@ skipping 41 matching lines @@
   String toString() => 'CodegenRegistry for $currentElement';
 
   CodegenEnqueuer get world => compiler.enqueuer.codegen;
   JavaScriptBackend get backend => compiler.backend;
 
   void registerAssert(bool hasMessage) {
     // Codegen does not register asserts.  They have been lowered to calls.
     assert(false);
   }
 
-  void registerInlining(Element inlinedElement, Element context) {
-    if (compiler.dumpInfo) {
-      compiler.dumpInfoTask.registerInlined(inlinedElement, context);
-    }
-  }
-
   void registerInstantiatedClass(ClassElement element) {
     backend.registerInstantiatedType(element.rawType, world, this);
   }
 
   void registerInstantiatedType(InterfaceType type) {
     backend.registerInstantiatedType(type, world, this);
   }
 
   void registerStaticUse(Element element) {
     world.registerStaticUse(element);
@@ skipping 118 matching lines @@
 
   TreeElements get resolutionTree => element.resolvedAst.elements;
 
   WorldImpact run(Compiler compiler, CodegenEnqueuer world) {
     if (world.isProcessed(element)) return const WorldImpact();
 
     registry = new CodegenRegistry(compiler, resolutionTree);
     return compiler.codegen(this, world);
   }
 }