Fire window.onerror for uncaught IndexedDB errors

LayoutTests/storage/indexeddb/resources/error-causes-abort-by-default.js

 if (this.importScripts) {
     importScripts('../../../resources/js-test.js');
     importScripts('shared.js');
 }
 
 description("Verify that a transaction with an error aborts unless preventDefault() is called.");
 
 indexedDBTest(prepareDatabase, addData);
 function prepareDatabase()
 {
@@ skipping 11 matching lines @@
     evalAndLog("trans.onabort = unexpectedAbortCallback");
     evalAndLog("trans.oncomplete = transactionCompleted");
     store = evalAndLog("store = trans.objectStore('storeName')");
     request = evalAndLog("store.add({x: 'value', y: 'zzz'}, 'key')");
     request.onsuccess = addMore;
     request.onerror = unexpectedErrorCallback;
 }
 
 function addMore()
 {
-    
     request = evalAndLog("event.target.source.add({x: 'value', y: 'zzz'}, 'key')");
     request.onsuccess = unexpectedSuccessCallback;
     request.addEventListener("error", preventTheDefault);
 }
 
 function preventTheDefault()
 {
     evalAndLog("event.preventDefault()");
 }
 
 function transactionCompleted()
 {
     testPassed("Transaction completed");
     debug("");
     debug("");
     trans = evalAndLog("trans = db.transaction(['storeName'], 'readwrite')");
     evalAndLog("trans.onabort = transactionAborted1");
     evalAndLog("trans.oncomplete = unexpectedCompleteCallback");
     store = evalAndLog("store = trans.objectStore('storeName')");
     request = evalAndLog("store.add({x: 'value', y: 'zzz'}, 'key')");
     request.onsuccess = unexpectedSuccessCallback;
     request.onerror = allowDefault;
+    expectError();
 }
 
 function allowDefault()
 {
     debug("Doing nothing to prevent the default action...");
 }
 
 function transactionAborted1()
 {
     testPassed("Transaction aborted");
     debug("");
     debug("");
     trans = evalAndLog("trans = db.transaction(['storeName'], 'readwrite')");
     evalAndLog("trans.onabort = transactionAborted2");
     evalAndLog("trans.oncomplete = unexpectedCompleteCallback");
     store = evalAndLog("store = trans.objectStore('storeName')");
     request = evalAndLog("store.add({x: 'value', y: 'zzz'}, 'key')");
     request.onsuccess = unexpectedSuccessCallback;
+    expectError();
     debug("Omitting an onerror handler");
 }
 
 function transactionAborted2()
 {
     testPassed("Transaction aborted");
     finishJSTest();
 }