Settings page sliding transition

chrome/browser/resources/options/browser_options.js

Index: chrome/browser/resources/options/browser_options.js
diff --git a/chrome/browser/resources/options/browser_options.js b/chrome/browser/resources/options/browser_options.js
index c7bcb147c8cd40ab170006dd21461063323f6249..edf02ec4b84b84097f183655575a14ba3b7542fc 100644
--- a/chrome/browser/resources/options/browser_options.js
+++ b/chrome/browser/resources/options/browser_options.js
@@ -745,6 +745,9 @@ cr.define('options', function() {
       section.style.height = (showing ? 0 : container.offsetHeight) + 'px';
       section.classList.add('sliding');
 
+      // Force a style recalc before starting the animation.

[Dan Beam, 2014/09/10 22:56:34]

can you please add a 

  /** @suppress {uselessCode} */
  section.offsetHeight;

to make the closure compiler happy?

[michaelpg, 2014/09/10 23:19:52]

Done.

+      section.offsetHeight;
+
       if (this.sectionHeightChangeTimeout_ !== null)
         clearTimeout(this.sectionHeightChangeTimeout_);