Throw on range error when creating a string via API.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 304d880d3da3017f3f21a8a3b39b3ccc9456c09f..a683add29bff17877b4a2b26adb960e0650e983b 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -5438,10 +5438,12 @@ inline Local<String> NewString(Isolate* v8_isolate,
   ENTER_V8(isolate);
   if (length == -1) length = StringLength(data);
   // We do not expect this to fail. Change this if it does.

[Jakob Kummerow, 2015/02/10 16:00:19]

nit: outdated comment

-  i::Handle<i::String> result = NewString(
-      isolate->factory(),
-      type,
-      i::Vector<const Char>(data, length)).ToHandleChecked();
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::String> result;
+  has_pending_exception =
+      !NewString(isolate->factory(), type, i::Vector<const Char>(data, length))
+           .ToHandle(&result);
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<String>());
   if (type == String::kUndetectableString) {
     result->MarkAsUndetectable();
   }