Print preview: Use an ID instead of memory pointer string in WebUI.

BUG=144051

Review URL: https://chromiumcodereview.appspot.com/10870003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@153342 0039d316-1c4b-4281-b951-d872f2087c98
void PrintPreviewHandler::HandleSaveLastPrinter(const ListValue* args) {
  std::string data_to_save;
  if (args->GetString(0, &data_to_save) && !data_to_save.empty())
    GetStickySettings()->StorePrinterName(data_to_save);

  if (args->GetString(1, &data_to_save) && !data_to_save.empty())
    GetStickySettings()->StoreCloudPrintData(data_to_save);
}

void PrintPreviewHandler::HandleSaveLastPrinter(const ListValue* args) {
  std::string data_to_save;
  if (args->GetString(0, &data_to_save) && !data_to_save.empty())
    GetStickySettings()->StorePrinterName(data_to_save);

  if (args->GetString(1, &data_to_save) && !data_to_save.empty())
    GetStickySettings()->StoreCloudPrintData(data_to_save);
}
