Revert r1380 that is breaking frog.

runtime/vm/object.h

 // Copyright (c) 2011, 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_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "vm/assert.h"
 #include "vm/dart.h"
 #include "vm/globals.h"
@@ skipping 227 matching lines @@
     return exception_handlers_class_;
   }
   static RawClass* context_class() { return context_class_; }
   static RawClass* context_scope_class() { return context_scope_class_; }
   static RawClass* api_failure_class() { return api_failure_class_; }
 
   static int GetSingletonClassIndex(const RawClass* raw_class);
   static RawClass* GetSingletonClass(int index);
   static const char* GetSingletonClassName(int index);
 
-  static RawClass* CreateAndRegisterCoreInterface(const char* cname,
-                                                  const Script& script,
-                                                  const Library& core_lib);
-  static void RegisterCoreImplClass(const Class& cls,
-                                    const char* cname,
-                                    const Script& impl_script,
-                                    const Library& core_impl_lib);
-
   static void Init(Isolate* isolate);
   static void InitFromSnapshot(Isolate* isolate);
   static void InitOnce();
 
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawObject));
   }
 
   static const ObjectKind kInstanceKind = kObject;
 
@@ skipping 476 matching lines @@
 
   // Check if this type represents the 'String' interface.
   bool IsStringInterface() const;
 
   // Check if this type represents the 'Function' interface.
   bool IsFunctionInterface() const;
 
   // Check if this type represents the 'List' interface.
   bool IsListInterface() const;
 
-  // Check if this type represents a signature type.
-  bool IsSignatureType() const;
-
   // Check if this type is an interface type.
   bool IsInterfaceType() const {
     if (!HasResolvedTypeClass()) {
       return false;
     }
     const Class& cls = Class::Handle(type_class());
     return !cls.IsNull() && cls.is_interface();
   }
 
   // Check the "more specific than" relationship.
@@ skipping 2246 matching lines @@
 }
 
 
 void Context::SetAt(intptr_t index, const Instance& value) const {
   StorePointer(InstanceAddr(index), value.raw());
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_