Change var blah_blah -> blahBlah.

chrome/browser/resources/chromeos/login/oobe_screen_update.js

Index: chrome/browser/resources/chromeos/login/oobe_screen_update.js
diff --git a/chrome/browser/resources/chromeos/login/oobe_screen_update.js b/chrome/browser/resources/chromeos/login/oobe_screen_update.js
index 7a71899425913275799ea1e8be042100e96dfc88..070ee32607f5b2665aa5ce1c0baebf1f20ee249a 100644
--- a/chrome/browser/resources/chromeos/login/oobe_screen_update.js
+++ b/chrome/browser/resources/chromeos/login/oobe_screen_update.js
@@ -70,7 +70,7 @@ cr.define('oobe', function() {
     },
   };
 
-  var ellipsis_animation_active = false;
+  var ellipsisAnimationActive = false;
 
   /**
    * Updates number of dots in the ellipsis.
@@ -80,7 +80,7 @@ cr.define('oobe', function() {
    */
   function updateEllipsisAnimation_(count) {
     $('update-checking-ellipsis').textContent = ELLIPSIS[count];
-    if (ellipsis_animation_active) {
+    if (ellipsisAnimationActive) {
       window.setTimeout(function() {
           updateEllipsisAnimation_((count + 1) % ELLIPSIS.length);
         }, ELLIPSIS_ANIMATION_TIMEOUT_MS);
@@ -98,7 +98,7 @@ cr.define('oobe', function() {
    * Starts animation for tail ellipses in "Checking for update..." label.
    */
   UpdateScreen.startEllipsisAnimation = function() {
-    ellipsis_animation_active = true;
+    ellipsisAnimationActive = true;
     updateEllipsisAnimation_(0);
   };
 
@@ -106,7 +106,7 @@ cr.define('oobe', function() {
    * Stops animation for tail ellipses in "Checking for update..." label.
    */
   UpdateScreen.stopEllipsisAnimation = function() {
-    ellipsis_animation_active = false;
+    ellipsisAnimationActive = false;
   };
 
   return {