Bug 1112556 - Ctrl-Tab previews are oversized with a small number of tabs open. r=dao

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extra : rebase_source : 1cb9531271538fcf6d842db56000e31cd21208d3
Bug 1112552 - Clean up global-scope pollution from browser-fxaccounts.js. r=dao

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extra : rebase_source : 5eb7c7451e8b8a57a2ecac55a1b0404bb7ce66dc
Bug 647540 - Get rid of the toolbar-primary class. r=enn

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extra : rebase_source : a42a4c583376dfa153bd4e7bae514646b35a6e22