Split RuntimesTypes into RuntimeTypes and RuntimeTypesEncoder

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

 // Copyright (c) 2013, 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.
 
 part of dart2js.js_emitter;
 
 /// Represents an entry's position in one of the global metadata arrays.
 ///
 /// [_rc] is used to count the number of references of the token in the
 /// ast for a program.
@@ skipping 225 matching lines @@
       _BoundMetadataEntry result = new _BoundMetadataEntry(node);
       if (_compiler.hasIncrementalSupport) {
         result.finalize(_globalMetadataCounter++);
       }
       return result;
     });
   }
 
   jsAst.Expression _computeTypeRepresentation(DartType type,
                                               {ignoreTypeVariables: false}) {
-    jsAst.Expression representation = _backend.rti.getTypeRepresentation(
+    jsAst.Expression representation = _backend.rtiEncoder.getTypeRepresentation(
         type,
         (variable) {
           if (ignoreTypeVariables) return new jsAst.LiteralNull();
           return _typeVariableHandler.reifyTypeVariable(variable.element);
         },
         (TypedefType typedef) {
           return _backend.isAccessibleByReflection(typedef.element);
         });
 
     if (representation is jsAst.LiteralString) {
@@ skipping 103 matching lines @@
     if (token is _ForwardingMetadataEntry && !token.isBound) {
       _foundUnboundToken = true;
     }
   }
 
   bool findUnboundPlaceholders(jsAst.Node node) {
     node.accept(this);
     return _foundUnboundToken;
   }
 }