Bug 864218 - Improve performance when accessing variables defined in run-once closures, r=luke,jandem.
Bug 874915 - Stop the AudioBufferSourceNode if the offset is no longer valid after setting a new buffer; r=roc

--HG--
extra : rebase_source : 0b179aab5ddb1ffd4ab2aeb8366b36975c949187
Bug 858358 - fixup line endings in bookmarks and histroy tests. r=rsilveira
Bug 874970 - Display proper error strings in Sync flyout when sync login fails. Also, close initial sync progress dialog if login fails. r=ally
Bug 874024 - Allow creation of ScriptProcessorNodes with 0 input or output channels; r=roc