WebUI: Enable ESLint rule for missing semicolons.

chrome/browser/resources/chromeos/chromevox/braille/expanding_braille_translator.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Translates text to braille, optionally with some parts
  * uncontracted.
  */
 
 goog.provide('cvox.ExpandingBrailleTranslator');
@@ skipping 134 matching lines @@
   function chunkTranslated(chunk, cells, textToBraille, brailleToText) {
     chunk.cells = cells;
     chunk.textToBraille = textToBraille;
     chunk.brailleToText = brailleToText;
     if (--numPendingCallbacks <= 0)
       finish();
   }
 
   function finish() {
     var totalCells = chunks.reduce(
-        function(accum, chunk) { return accum + chunk.cells.byteLength}, 0);
+        function(accum, chunk) { return accum + chunk.cells.byteLength;}, 0);

[dschuyler, 2017/05/26 19:00:25]

optional:
I think a space should follow the ';'
(though I also think the line should break after the '{')

[dpapad, 2017/05/26 19:08:39]

clang-format will do this (but I am not running it as part of this CL).
Specifically if one runs clang-format here it would become

var totalCells = chunks.reduce(function(accum, chunk) {
  return accum + chunk.cells.byteLength;
}, 0);

     var cells = new Uint8Array(totalCells);
     var cellPos = 0;
     var textToBraille = [];
     var brailleToText = [];
     function appendAdjusted(array, toAppend, adjustment) {
       array.push.apply(array, toAppend.map(
           function(elem) { return adjustment + elem; }
           ));
     }
     for (var i = 0, chunk; chunk = chunks[i]; ++i) {
@@ skipping 165 matching lines @@
   };
 };
 
 
 /**
  * A character range with inclusive start and exclusive end positions.
  * @typedef {{start: number, end: number}}
  * @private
  */
 cvox.ExpandingBrailleTranslator.Range_;