Bug 843019 - Add VariablesViewController#setSingleVariable. r=vp, r=msucan
Bug 915875 - Clean up devtools/framework/toolbox.js.
Bug 920642: Remove dead files from bug 870171. r=rnewman
Merge m-c to fx-team.
Backed out changeset 272dabb40b3d (bug 843019) for mochitest-bc failures.
Bug 875924 - Initialize the NewTabUtils thumbnail expiration filter [r=sfoster]
Bug 920333 - Use a white background by default for thumbnail tile icon and label [r=sfoster]
Bug 900072 - Work around line wrapping bugs in flyoutpanels [r=sfoster]
Merge mx-team to m-c