Use the runtime for generic subsitution of variable types, return types, parameter types.

runtime/vm/bootstrap_natives.h

 // Copyright (c) 2012, 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.
 
 #ifndef VM_BOOTSTRAP_NATIVES_H_
 #define VM_BOOTSTRAP_NATIVES_H_
 
 #include "vm/native_entry.h"
 
 // bootstrap dart natives used in the core dart library.
@@ skipping 282 matching lines @@
   V(LibraryMirror_invokeSetter, 4)                                             \
   V(TypeVariableMirror_owner, 1)                                               \
   V(TypeVariableMirror_upper_bound, 1)                                         \
   V(TypeVariableMirror_instantiate_from, 2)                                    \
   V(DeclarationMirror_metadata, 1)                                             \
   V(FunctionTypeMirror_call_method, 2)                                         \
   V(FunctionTypeMirror_parameters, 2)                                          \
   V(FunctionTypeMirror_return_type, 1)                                         \
   V(MethodMirror_owner, 1)                                                     \
   V(MethodMirror_parameters, 2)                                                \
-  V(MethodMirror_return_type, 1)                                               \
+  V(MethodMirror_return_type, 2)                                               \
   V(MethodMirror_source, 1)                                                    \
-  V(ParameterMirror_type, 2)                                                   \
+  V(ParameterMirror_type, 3)                                                   \
   V(TypedefMirror_referent, 1)                                                 \
   V(TypedefMirror_instantiate_from, 2)                                         \
   V(TypedefMirror_declaration, 1)                                              \
-  V(VariableMirror_type, 1)                                                    \
+  V(VariableMirror_type, 2)                                                    \
   V(GrowableList_allocate, 2)                                                  \
   V(GrowableList_getIndexed, 2)                                                \
   V(GrowableList_setIndexed, 3)                                                \
   V(GrowableList_getLength, 1)                                                 \
   V(GrowableList_getCapacity, 1)                                               \
   V(GrowableList_setLength, 2)                                                 \
   V(GrowableList_setData, 2)                                                   \
   V(WeakProperty_new, 2)                                                       \
   V(WeakProperty_getKey, 1)                                                    \
   V(WeakProperty_getValue, 1)                                                  \
   V(WeakProperty_setValue, 2)                                                  \
   V(Uri_isWindowsPlatform, 0)                                                  \
 
 class BootstrapNatives : public AllStatic {
  public:
   static Dart_NativeFunction Lookup(Dart_Handle name, int argument_count);
 
 #define DECLARE_BOOTSTRAP_NATIVE(name, ignored)                                \
   static void DN_##name(Dart_NativeArguments args);
 
   BOOTSTRAP_NATIVE_LIST(DECLARE_BOOTSTRAP_NATIVE)
 
 #undef DECLARE_BOOTSTRAP_NATIVE
 };
 
 }  // namespace dart
 
 #endif  // VM_BOOTSTRAP_NATIVES_H_