Remove HRuntimeType implementation

pkg/compiler/lib/src/js_backend/backend_helpers.dart

 // Copyright (c) 2015, 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_backend.helpers;
 
 import '../common.dart';
 import '../common/names.dart' show Identifiers, Uris;
 import '../compiler.dart' show Compiler;
 import '../core_types.dart' show CommonElements, ElementEnvironment;
@@ skipping 594 matching lines @@
       _findHelperFunction('runtimeTypeToString');
 
   FunctionEntity get assertIsSubtype => _findHelperFunction('assertIsSubtype');
 
   FunctionEntity get checkSubtype => _findHelperFunction('checkSubtype');
 
   FunctionEntity get assertSubtype => _findHelperFunction('assertSubtype');
 
   FunctionEntity get subtypeCast => _findHelperFunction('subtypeCast');
 
+  FunctionEntity get functionTypeTest =>

[floitsch, 2017/03/02 13:43:38]

It feels fishy that the helper is in no impact.
It turns out that others (like `functionTypeCheck`) will call this function
anyway, but that's not immediately obvious.

+      _findHelperFunction('functionTypeTest');
+
   FunctionEntity get checkSubtypeOfRuntimeType =>
       _findHelperFunction('checkSubtypeOfRuntimeType');
 
   FunctionEntity get assertSubtypeOfRuntimeType =>
       _findHelperFunction('assertSubtypeOfRuntimeType');
 
   FunctionEntity get subtypeOfRuntimeTypeCast =>
       _findHelperFunction('subtypeOfRuntimeTypeCast');
 
   FunctionEntity get checkDeferredIsLoaded =>
@@ skipping 78 matching lines @@
       _findAsyncHelperClass("_AsyncStarStreamController");
 
   ConstructorEntity get asyncStarControllerConstructor =>
       _env.lookupConstructor(asyncStarController, "", required: true);
 
   ConstructorEntity get streamIteratorConstructor =>
       _env.lookupConstructor(_findAsyncHelperClass("StreamIterator"), "");
 
   ClassEntity get VoidRuntimeType => _findHelperClass('VoidRuntimeType');
 
-  ClassEntity get RuntimeType => _findHelperClass('RuntimeType');
-
-  ClassEntity get RuntimeFunctionType =>
-      _findHelperClass('RuntimeFunctionType');
-
-  ClassEntity get RuntimeTypePlain => _findHelperClass('RuntimeTypePlain');
-
-  ClassEntity get RuntimeTypeGeneric => _findHelperClass('RuntimeTypeGeneric');
-
-  ClassEntity get DynamicRuntimeType => _findHelperClass('DynamicRuntimeType');
-
-  FunctionEntity get getDynamicRuntimeType {
-    // TODO(johnniwinther): Support this in mocks.
-    return _env.lookupLibraryMember(jsHelperLibrary, 'getDynamicRuntimeType');
-  }
-
-  FunctionEntity get getVoidRuntimeType {
-    // TODO(johnniwinther): Support this in mocks.
-    return _env.lookupLibraryMember(jsHelperLibrary, 'getVoidRuntimeType');
-  }
-
-  FunctionEntity get buildInterfaceType {
-    // TODO(johnniwinther): Support this in mocks.
-    return _env.lookupLibraryMember(jsHelperLibrary, 'buildInterfaceType');
-  }
-
-  FunctionEntity get buildFunctionType {
-    // TODO(johnniwinther): Support this in mocks.
-    return _env.lookupLibraryMember(jsHelperLibrary, 'buildFunctionType');
-  }
-
-  FunctionEntity get buildNamedFunctionType {
-    // TODO(johnniwinther): Support this in mocks.
-    return _env.lookupLibraryMember(jsHelperLibrary, 'buildNamedFunctionType');
-  }
-
-  FunctionEntity get functionTypeTestMetaHelper =>
-      _findHelperFunction('functionTypeTestMetaHelper');
-
   FunctionEntity get defineProperty => _findHelperFunction('defineProperty');
 
   FunctionEntity get startRootIsolate =>
       _findLibraryMember(isolateHelperLibrary, START_ROOT_ISOLATE);
 
   FunctionEntity get currentIsolate =>
       _findLibraryMember(isolateHelperLibrary, '_currentIsolate');
 
   FunctionEntity get callInIsolate =>
       _findLibraryMember(isolateHelperLibrary, '_callInIsolate');
@@ skipping 38 matching lines @@
   /// The class for patch annotations defined in dart:_js_helper.
   ClassEntity get patchAnnotationClass =>
       _patchAnnotationClass ??= _findHelperClass('_Patch');
 
   ClassEntity _nativeAnnotationClass;
 
   /// The class for native annotations defined in dart:_js_helper.
   ClassEntity get nativeAnnotationClass =>
       _nativeAnnotationClass ??= _findHelperClass('Native');
 }