Remove Compiler/JavaScriptBackend from metadata_collector

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 '../../closure.dart' show ClosureFieldElement;
 import '../../common.dart';
 import '../../common/names.dart' show Names, Selectors;
 import '../../compiler.dart' show Compiler;
@@ skipping 762 matching lines @@
         canBeReflected: canBeReflected,
         requiredParameterCount: requiredParameterCount,
         optionalParameterDefaultValues: optionalParameterDefaultValues,
         functionType: functionType);
   }
 
   js.Expression _generateFunctionType(
       ResolutionDartType type, OutputUnit outputUnit) {
     if (type.containsTypeVariables) {
       js.Expression thisAccess = js.js(r'this.$receiver');
-      return backend.rtiEncoder.getSignatureEncoding(type, thisAccess);
+      return backend.rtiEncoder
+          .getSignatureEncoding(backend.emitter.emitter, type, thisAccess);
     } else {
       return backend.emitter.metadataCollector
           .reifyTypeForOutputUnit(type, outputUnit);
     }
   }
 
   List<ParameterStubMethod> _generateParameterStubs(
       MethodElement element, bool canTearOff) {
     if (!_methodNeedsStubs(element)) return const <ParameterStubMethod>[];
 
@@ skipping 178 matching lines @@
       Constant constant = new Constant(name, holder, constantValue);
       _constants[constantValue] = constant;
     }
   }
 
   Holder _registerStaticStateHolder() {
     return _registry.registerHolder(namer.staticStateHolder,
         isStaticStateHolder: true);
   }
 }