Bug 1013601 - Part 1: Add uptimeMillis() to UITelemetry.jsm. r=rnewman
Bug 1013601 - Part 2: Change callers to use uptimeMillis(). r=rnewman
Bug 1009560 - Download images to share on a background thread. r=mcomella
Bug 1001129 - Allow setting a default selected item in grid views. r=mfinkle
Merge m-c to fx-team.
Bug 1008424 - Remove unintended gradient from the tab toolbar's background. r=mconley,jjmathies
Bug 973532 - Remove legacy NEWTAB_PAGE_SHOWN probe for homepage r=adw
Bug 1013722 - Fix ContentSearch.jsm error: TypeError: msg.target.messageManager is undefined. r=felipe
Merge fx-team to m-c