Clean up VM class DartFunction.

runtime/vm/object.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_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 5644 matching lines @@
  private:
   enum {
     kTypeArguments = 1,
     kDataOffset = 2,
     kOffsetInBytesOffset = 3,
     kLengthOffset = 4,
   };
 };
 
 
-// DartFunction represents the abstract Dart class 'Function'.
-class DartFunction : public Instance {
- private:
-  FINAL_HEAP_OBJECT_IMPLEMENTATION(DartFunction, Instance);
-  friend class Class;
-  friend class Instance;
-};
-
-
 class Closure : public AllStatic {
  public:
   static RawFunction* function(const Instance& closure) {
     return *FunctionAddr(closure);
   }
   static intptr_t function_offset() {
     return static_cast<intptr_t>(kFunctionOffset * kWordSize);
   }
 
   static RawContext* context(const Instance& closure) {
@@ skipping 374 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_