Split RuntimesTypes into RuntimeTypes and RuntimeTypesEncoder

pkg/compiler/lib/src/js_emitter/lazy_emitter/emitter.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.lazy_emitter;
 
 import 'package:js_runtime/shared/embedded_names.dart' show
     JsBuiltin,
     METADATA,
     TYPES;
@@ skipping 137 matching lines @@
     switch (builtin) {
       case JsBuiltin.dartObjectConstructor:
         return js.js.expressionTemplateYielding(
             typeAccess(_compiler.objectClass));
 
       case JsBuiltin.isCheckPropertyToJsConstructorName:
         int isPrefixLength = namer.operatorIsPrefix.length;
         return js.js.expressionTemplateFor('#.substring($isPrefixLength)');
 
       case JsBuiltin.isFunctionType:
-        return _backend.rti.representationGenerator.templateForIsFunctionType;
+        return _backend.rtiEncoder.templateForIsFunctionType;
 
       case JsBuiltin.rawRtiToJsConstructorName:
         return js.js.expressionTemplateFor("#.$typeNameProperty");
 
       case JsBuiltin.rawRuntimeType:
         return js.js.expressionTemplateFor("#.constructor");
 
       case JsBuiltin.createFunctionTypeRti:
-        return _backend.rti.representationGenerator
-            .templateForCreateFunctionType;
+        return _backend.rtiEncoder.templateForCreateFunctionType;
 
       case JsBuiltin.isSubtype:
         // TODO(floitsch): move this closer to where is-check properties are
         // built.
         String isPrefix = namer.operatorIsPrefix;
         return js.js.expressionTemplateFor("('$isPrefix' + #) in #.prototype");
 
       case JsBuiltin.isGivenTypeRti:
         return js.js.expressionTemplateFor('#.$typeNameProperty === #');
 
@@ skipping 10 matching lines @@
         reporter.internalError(NO_LOCATION_SPANNABLE,
                                 "Unhandled Builtin: $builtin");
         return null;
     }
   }
 
   @override
   void invalidateCaches() {
   }
 }