Convert array.length to API-style accessor.

src/accessors.h

Index: src/accessors.h
diff --git a/src/accessors.h b/src/accessors.h
index ed092057be211e6b55a17d9854acde57be7a414c..866847a0d999dfe253b3c1a2c9dbda68acf55003 100644
--- a/src/accessors.h
+++ b/src/accessors.h
@@ -37,9 +37,10 @@ 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(ArrayLength)
+
 
 #define ACCESSOR_INFO_LIST(V)       \
+  V(ArrayLength)                    \
   V(FunctionArguments)              \
   V(FunctionCaller)                 \
   V(FunctionName)                   \