Bug 1045186 - [B2G][Ringtones] The user can not share ringtone through MMS
bug 1055228 - Add download notification icon for states other than "downloading" and use it. r=qDot
Merge pull request #22543 from jimporter/ringtones-mimetype

Bug 1045186 - [B2G][Ringtones] The user can not share ringtone through MMS
Merge pull request #23050 from nullaus/bug1055228

bug 1055228 - Add download notification icon for states other than "down...
Add 'browsing' icon to shared/icons.css
Bug 938177 - Add 'browsing' icon to shared/icons.css r=kgrandon
Revert "Add 'browsing' icon to shared/icons.css"

This reverts commit 0e53c0e2b5f4cfc2e2c9498427034156a20b6551.
Bug 938177 - Add 'browsing' icon to shared/icons.css r=kgrandon
Bug 1055761 - Navigating to a URL can incorrectly switch to an existing browser window r=alive