Bug 898192 - Skip SocialMark and SocialShare code in onLocationChange when SocialUI is disabled. f=mhammond,r=jaws

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extra : rebase_source : f19d53a330e8f81ce6779bd1e786a1c256a5b921
Bug 873149 - Report the slowest test in mochitest, r=ted

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extra : rebase_source : a5da51081c9460c12a2366387acba095681bdca5
Bug 898626 - Use lazy module gettters for osfile and task. r=gps

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extra : rebase_source : 1db3b5fb4b7b7c607de535a48749e9c4383eecec
Bug 897930 - Unhide hidden preference for disabling green download flash animation added in bug #861613. r=mak

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extra : rebase_source : 9a8231ae6d9971318c19d9b5b52864aa32926c27
Bug 897123 - Make GeckoAppShell.pumpMessageLoop waste less CPU time r=jchen

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extra : rebase_source : 7d5ffa3f2b9d29ff245886c40f4083e7451daec1