Bug 996280 - Use the docshell's sandbox flags if we can't get the active document in IsSandboxedFrom(). r=smaug, a=sledru
Bug 1000364 - Drop nonqueued messages for QuickTime's QTNSHIDDEN class. r=jimm, a=sledru
Bug 1008402 - Linux downloads button icon loses lwtheme color if using dark lwtheme (bright text). r=mconley, a=sledru
Bug 1009318 - Add Google search purpose for about:newtab. r=MattN, a=sledru
Bug 1009685 - Tell the cycle collector about the CanvasPath::mParent. r=bz, a=sledru

Plus a few other minor fixups.