Bug 952846 - Ship PDF.js code in Metro Firefox for Nightly builds only [r=jimm]
Bug 943071 - Regression fix from bug 950832: call the right browser translational helper for the y coord. r=mbrubeck
Bug 943071 - When caretPositionFromPoint fails fall back on selectAtPoint apis for selecting text. r=mbrubeck
Bug 955870 - Do some quick checks before calling CheckURIVisited r=blassey
Bug 955870 - Cache the array length in IsRecentlyVisitedURI r=blassey
Merge fx-team to m-c.