Revert "Correct semantics for numerically indexed stores to typed arrays."

src/lookup.cc

Index: src/lookup.cc
diff --git a/src/lookup.cc b/src/lookup.cc
index bca0ab5d5f4379888605026c65528a1f7d5eb40c..b855abe97fdb47fba3821215e36310c1e2365553 100644
--- a/src/lookup.cc
+++ b/src/lookup.cc
@@ -309,24 +309,6 @@ void LookupIterator::WriteDataValue(Handle<Object> value) {
 }
 
 
-bool LookupIterator::IsSpecialNumericIndex() const {
-  if (GetStoreTarget()->IsJSTypedArray() && name()->IsString()) {
-    Handle<String> name_string = Handle<String>::cast(name());
-    if (name_string->length() > 0) {
-      double d =
-          StringToDouble(isolate()->unicode_cache(), *name_string, NO_FLAGS);
-      if (!std::isnan(d)) {
-        Factory* factory = isolate()->factory();
-        Handle<Object> num = factory->NewNumber(d);
-        Handle<String> roundtrip_string = factory->NumberToString(num);
-        if (String::Equals(name_string, roundtrip_string)) return true;
-      }
-    }
-  }
-  return false;
-}
-
-
 void LookupIterator::InternalizeName() {
   if (name_->IsUniqueName()) return;
   name_ = factory()->InternalizeString(Handle<String>::cast(name_));