Bug 1068425 - Implement tile reporting components. r=rnewman, a=lsblakk
Bug 1068425 - Move TopSitesGridView click listeners to TopSitesPanel. r=lucasr, a=lsblakk
Bug 1068425 - Add TilesRecorder hooks to TopSitesPanel. r=lucasr, a=lsblakk
Bug 1068425 - Add tile reporting tests. r=rnewman, a=lsblakk
Bug 1079621 - Change non-fatal errors to warnings. r=rillian, a=lsblakk

This resolves intermittent failures in continuous integration.

NS_ERROR() triggers an assertion in debug builds, which tinderbox
reports as a failure. NS_WARNING calls NS_DebugBreak, but with the
lower severity level it skips invoking the debugger.
Bug 1095934 - Don't use the update channel to identify Aurora. r=glandium, a=lsblakk
Bug 1092570 - Avoid exposing FontFace(Set) constructors when the Font Loading API pref is not set. r=bzbarsky, a=lsblakk
Bug 1095514 - Make distribution tile tests more robust. r=rnewman, a=test-only