Reuse RuntimeTypesNeedBuilderImpl and _RuntimeTypesNeed for kernel based elements

pkg/compiler/lib/src/resolution/resolution_strategy.dart

 // Copyright (c) 2017, 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.resolution_strategy;
 
 import '../common.dart';
 import '../common_elements.dart';
 import '../common/backend_api.dart';
 import '../common/names.dart';
@@ skipping 87 matching lines @@
   MirrorsDataBuilder createMirrorsDataBuilder() {
     return new MirrorsDataImpl(
         _compiler, _compiler.options, _compiler.commonElements);
   }
 
   MirrorsResolutionAnalysis createMirrorsResolutionAnalysis(
           JavaScriptBackend backend) =>
       new MirrorsResolutionAnalysisImpl(backend, _compiler.resolution);
 
   RuntimeTypesNeedBuilder createRuntimeTypesNeedBuilder() {
-    return new RuntimeTypesNeedBuilderImpl();
+    return new ResolutionRuntimeTypesNeedBuilderImpl(
+        elementEnvironment, _compiler.types);
   }
 
   ResolutionWorldBuilder createResolutionWorldBuilder(
       NativeBasicData nativeBasicData,
       SelectorConstraintsStrategy selectorConstraintsStrategy) {
     return new ElementResolutionWorldBuilder(
         _compiler.backend, _compiler.resolution, selectorConstraintsStrategy);
   }
 
   WorkItemBuilder createResolutionWorkItemBuilder(
@@ skipping 103 matching lines @@
     return cls.thisType;
   }
 
   @override
   ResolutionInterfaceType getRawType(ClassElement cls) {
     cls.ensureResolved(_resolution);
     return cls.rawType;
   }
 
   @override
+  bool isGenericClass(ClassEntity cls) {
+    return getThisType(cls).typeArguments.isNotEmpty;
+  }
+
+  @override
   ResolutionDartType getTypeVariableBound(TypeVariableElement typeVariable) {
     return typeVariable.bound;
   }
 
   @override
   ResolutionInterfaceType createInterfaceType(
       ClassElement cls, List<ResolutionDartType> typeArguments) {
     cls.ensureResolved(_resolution);
     return cls.thisType.createInstantiation(typeArguments);
   }
@@ skipping 362 matching lines @@
             }
           }
         });
       });
     }
 
     _compiler.libraryLoader.libraries
         .forEach(processJsInteropAnnotationsInLibrary);
   }
 }