Convert function.length to API-style accessor.

src/accessors.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 19 matching lines @@
 
 #include "allocation.h"
 #include "v8globals.h"
 
 namespace v8 {
 namespace internal {
 
 // The list of accessor descriptors. This is a second-order macro
 // taking a macro to be applied to all accessor descriptor names.
 #define ACCESSOR_DESCRIPTOR_LIST(V) \
-  V(FunctionLength)                 \
   V(FunctionName)                   \
   V(FunctionArguments)              \
   V(FunctionCaller)                 \
   V(ArrayLength)
 
 #define ACCESSOR_INFO_LIST(V)       \
+  V(FunctionLength)                 \
   V(FunctionPrototype)              \
   V(ScriptColumnOffset)             \
   V(ScriptCompilationType)          \
   V(ScriptContextData)              \
   V(ScriptEvalFromScript)           \
   V(ScriptEvalFromScriptPosition)   \
   V(ScriptEvalFromFunctionName)     \
   V(ScriptId)                       \
   V(ScriptLineEnds)                 \
   V(ScriptLineOffset)               \
@@ skipping 90 matching lines @@
   static Object* IllegalGetAccessor(Isolate* isolate, Object* object, void*);
   static Object* ReadOnlySetAccessor(Isolate* isolate,
                                      JSObject*,
                                      Object* value,
                                      void*);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ACCESSORS_H_