Use entities in runtime_types

pkg/compiler/lib/src/js_emitter/program_builder/program_builder.dart

 // Copyright (c) 2014, 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.program_builder;
 
 import 'dart:io';
 import 'dart:convert' show JSON;
 
 import '../../closure.dart' show ClosureTask, ClosureFieldElement;
@@ skipping 16 matching lines @@
         MemberElement,
         MethodElement,
         ParameterElement,
         TypedefElement,
         VariableElement;
 import '../../elements/entities.dart';
 import '../../elements/resolution_types.dart'
     show ResolutionDartType, ResolutionFunctionType, ResolutionTypedefType;
 import '../../elements/types.dart' show DartType, DartTypes;
 import '../../js/js.dart' as js;
-import '../../js_backend/backend.dart'
-    show
-        RuntimeTypesChecks,
-        RuntimeTypesNeed,
-        RuntimeTypesEncoder,
-        RuntimeTypesSubstitutions,
-        SuperMemberData;
+import '../../js_backend/backend.dart' show SuperMemberData;
 import '../../js_backend/backend_usage.dart';
 import '../../js_backend/constant_handler_javascript.dart'
     show JavaScriptConstantCompiler;
 import '../../js_backend/custom_elements_analysis.dart';
 import '../../js_backend/namer.dart' show Namer, StringBackedName;
 import '../../js_backend/native_data.dart';
 import '../../js_backend/interceptor_data.dart';
 import '../../js_backend/mirrors_data.dart';
 import '../../js_backend/js_interop_analysis.dart';
+import '../../js_backend/runtime_types.dart'
+    show
+        RuntimeTypesChecks,
+        RuntimeTypesNeed,
+        RuntimeTypesEncoder,
+        RuntimeTypesSubstitutions;
 import '../../native/enqueue.dart' show NativeCodegenEnqueuer;
 import '../../options.dart';
 import '../../universe/selector.dart' show Selector;
 import '../../universe/world_builder.dart'
     show CodegenWorldBuilder, SelectorConstraints;
 import '../../world.dart' show ClosedWorld;
 import '../js_emitter.dart'
     show
         ClassStubGenerator,
         CodeEmitterTask,
@@ skipping 1111 matching lines @@
       Constant constant = new Constant(name, holder, constantValue);
       _constants[constantValue] = constant;
     }
   }
 
   Holder _registerStaticStateHolder() {
     return _registry.registerHolder(_namer.staticStateHolder,
         isStaticStateHolder: true);
   }
 }