function removeAllInDirectorySync(directory) {
if (!directory)
return;
var reader = directory.createReader();
do {
var entries = reader.readEntries();
for (var i = 0; i < entries.length; ++i) {
if (entries[i].isDirectory)
entries[i].removeRecursively();
else
entries[i].remove();
}
} while (entries.length);
}
if (this.importScripts && !this.webkitRequestFileSystem) {
debug('This test requires FileSystem API.');
finishJSTest();
}