Bug 886647 - passed unused in TestAUSHelper.cpp. r=bbondy
Bug 884587 - Part 1: Perform file removal with purge manifests; r=glandium
Bug 884587 - Part 2: Add EXPORTS files to purge manifest; r=glandium
Bug 886690 - Make sure that the test case for bug 880202 will pass if Web Audio is disabled
Backed out 2 changesets (bug 884587) because of Windows build bustage on a CLOSED TREE

Backed out changeset 0244a34bc419 (bug 884587)
Backed out changeset 796961a384b4 (bug 884587)
Bug 879079 - Fix rooting analysis bugs from calls to ToNumber; r=sfink

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extra : rebase_source : 98a04e315c9a372864d37447a102960737457aa1