Have toDOMStringList() use the V8TRYCATCH_FOR_V8STRINGRESOURCE() macro

LayoutTests/storage/indexeddb/resources/transaction-error.js

Index: LayoutTests/storage/indexeddb/resources/transaction-error.js
diff --git a/LayoutTests/storage/indexeddb/resources/transaction-error.js b/LayoutTests/storage/indexeddb/resources/transaction-error.js
index 558e23e3314ab65ac3f47d74dbaa59854d45b367..ac9b42167f9a1358108beb4818acc717c7d5bedf 100644
--- a/LayoutTests/storage/indexeddb/resources/transaction-error.js
+++ b/LayoutTests/storage/indexeddb/resources/transaction-error.js
@@ -14,6 +14,7 @@ function prepareDatabase()
     request.onerror = unexpectedErrorCallback;
 }
 
+var nonConvertibleToString = {toString: function() { throw "Exception in toString()"; }};
 function startTest()
 {
     debug("");
@@ -24,6 +25,10 @@ function startTest()
     shouldBeNull("trans.error");
 
     debug("");
+    debug("transaction() should throw if one of the DOMStringList items cannot be converted to a String:");
+    shouldThrow("db.transaction(['storeName', nonConvertibleToString])", "'Exception in toString()'");
+
+    debug("");
     debug("If IDBTransaction.abort() is explicitly called, IDBTransaction.error should be null:");
     evalAndLog("trans.abort()");
     trans.oncomplete = unexpectedCompleteCallback;