Throw exception on invalid string length instead of OOM.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 50b402b04be0a2e10e40b7fcbfa39e668f5e8029..fed4b4a4138135a55d7d18ff442f6e259c187332 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -951,6 +951,12 @@ Failure* Isolate::ThrowIllegalOperation() {
 }
 
 
+Failure* Isolate::ThrowInvalidStringLength() {
+  return Throw(*factory()->NewRangeError(
+      "invalid_string_length", HandleVector<Object>(NULL, 0)));
+}
+
+
 void Isolate::ScheduleThrow(Object* exception) {
   // When scheduling a throw we first throw the exception to get the
   // error reporting if it is uncaught before rescheduling it.