Bug 1027084 - Disable about:home snippets when running sessionstore tests
Bug 1027087 - Fix ContentRestore errors when a tab is closed while restoring into it
Bug 993013 - Fix 'this._cps2 is undefined' errors in test runs
Bug 1027092 - Fix "this.editor is undefined" errors when running browser_394759_behavior.js
Bug 1027096 - Fix encoding errors in browser_911547.js