Add an interface for an embedder to provide information about native

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 4c0059188d3e339e0501822daba55e3f34f1ec8e..b3799e78aa5471c121d619955e75c398f9ef5676 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -5237,22 +5237,6 @@ bool String::IsTwoByteEqualTo(Vector<const uc16> str) {
 }
 
 
-template <typename schar>
-static inline uint32_t HashSequentialString(const schar* chars, int length) {
-  StringHasher hasher(length);
-  if (!hasher.has_trivial_hash()) {
-    int i;
-    for (i = 0; hasher.is_array_index() && (i < length); i++) {
-      hasher.AddCharacter(chars[i]);
-    }
-    for (; i < length; i++) {
-      hasher.AddCharacterNoIndex(chars[i]);
-    }
-  }
-  return hasher.GetHashField();
-}
-
-
 uint32_t String::ComputeAndSetHash() {
   // Should only be called if hash code has not yet been computed.
   ASSERT(!HasHashCode());