Fix for bug 853136 (Prepare some tests for HTMLDocument using a WebIDL binding). r=bholley.

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extra : rebase_source : 0a19404b8d40075488568e179088e3c41ee8c4e4
Fix for bug 848088 (IonMonkey: property get IC for DOM list proxies fails to detect expando). r=jandem.

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extra : rebase_source : b06c714726c76e927fbc65d09ffecc09461c4e95
Fix for bug 852979 (Remove unused nsContentUtils::JSArrayToAtomArray). r=smaug.

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extra : rebase_source : c61c3477d5686956a44d45685c59c0a3415dc3c3