Fix js style issues.

chrome/browser/resources/chromeos/chromevox/host/chrome/braille_table.js

Index: chrome/browser/resources/chromeos/chromevox/host/chrome/braille_table.js
diff --git a/chrome/browser/resources/chromeos/chromevox/host/chrome/braille_table.js b/chrome/browser/resources/chromeos/chromevox/host/chrome/braille_table.js
index 17a18b29564fd1e727d1228f2237be3fe51af33a..46170a2ebafb6136575b0d7f8602439cb972b76c 100644
--- a/chrome/browser/resources/chromeos/chromevox/host/chrome/braille_table.js
+++ b/chrome/browser/resources/chromeos/chromevox/host/chrome/braille_table.js
@@ -30,6 +30,7 @@ cvox.BrailleTable.TABLE_PATH = 'chromevox/background/braille/tables.json';
 /**
  * Retrieves a list of all available braille tables.
  * @param {function(!Array.<cvox.BrailleTable.Table>)} callback
+ *     Called asynchronously with an array of tables.
  */
 cvox.BrailleTable.getAll = function(callback) {
   var url = chrome.extension.getURL(cvox.BrailleTable.TABLE_PATH);
@@ -55,7 +56,7 @@ cvox.BrailleTable.getAll = function(callback) {
  * Finds a table in a list of tables by id.
  * @param {!Array.<cvox.BrailleTable.Table>} tables tables to search in.
  * @param {string} id id of table to find.
- * @return {cvox.BrailleTable.Table}
+ * @return {cvox.BrailleTable.Table} The found table, or null if not found.
  */
 cvox.BrailleTable.forId = function(tables, id) {
   return tables.filter(function(table) { return table.id === id })[0] || null;