Bug 869540 - Split desktop-helper to segregate browser related feature out of it.
Merge pull request #9597 from ochameau/browser-helper

Bug 869540 - Split desktop-helper to segregate browser related feature out of it. r=@vingtetun
Bug 872141 - turn off unresponsive script dialogs r=julienw
Merge pull request #9768 from lightsofapollo/max-runtime-forever

Bug 872141 - turn off unresponsive script dialogs
Bug 865772 - check blob size before reading bytes from it