[Cleanup] Files.app: Misc style fixes in Javascript code.

chrome/browser/resources/file_manager/js/metadata/byte_reader.js

Index: chrome/browser/resources/file_manager/js/metadata/byte_reader.js
diff --git a/chrome/browser/resources/file_manager/js/metadata/byte_reader.js b/chrome/browser/resources/file_manager/js/metadata/byte_reader.js
index ff076ad4fcbd5880db13d753d0150df3d0a49c9f..ff6e52bfc9364ece23a25a786d1fee4b8a68b747 100644
--- a/chrome/browser/resources/file_manager/js/metadata/byte_reader.js
+++ b/chrome/browser/resources/file_manager/js/metadata/byte_reader.js
@@ -2,6 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+/**
+ * @constructor
+ * @param {ArrayBuffer} arrayBuffer  //TODO(JSDOC).
+ * @param {number=} opt_offset  //TODO(JSDOC).
+ * @param {number=} opt_length  //TODO(JSDOC).
+ */
 function ByteReader(arrayBuffer, opt_offset, opt_length) {
   opt_offset = opt_offset || 0;
   opt_length = opt_length || (arrayBuffer.byteLength - opt_offset);
@@ -11,7 +17,7 @@ function ByteReader(arrayBuffer, opt_offset, opt_length) {
   this.setByteOrder(ByteReader.BIG_ENDIAN);
 }
 
-// Static const and methods.
+// Static constants and methods.
 
 /**
  * Intel, 0x1234 is [0x34, 0x12]