GitLab

After browser crash, the wallpaper was reverted to the default wallpaper. This
CL fix the bug.

BUG=118751
TEST=Test on any chromeos device
select a wallpaper different than the default one
go to about:inducebrowsercrashforrealz, the browser will crash and restart
verify if the wallpaper reverted to the default wallpaper after restart.

Review URL: https://chromiumcodereview.appspot.com/9764012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@128232 0039d316-1c4b-4281-b951-d872f2087c98