dart-lang/chromedeveditor — pull request #3425 by emilycodes (2014-09-24 22:32:33+00:00)
Title: Remove references to deprecated Spark UI switching

Walking through the Chrome application, I found confusing references to switching between spark.html and spark_polymer.html. Didn't find any work in this area since last fall and spark_polymer.html is the only remaining implementation so I removed the remaining UI switching code in `background.js`