Bug 815591. Disable failing reftests that need the fix for bug 828146 (that doesn't affect B2G). a=bajaj
Bug 846144 - Don't optimize backgrounds to an ImageLayer if they have border-radius clipping. r=roc,a=akeybl
Bug 815591. Don't build nsDisplayBackgroundColor if there is no background color and we're not going to do hit-testing. r=mattwoodrow,a=akeybl
bug 853291, add Polish to b2g gecko l10n, a=tef+, NPOTB, DONTBUILD

--HG--
extra : transplant_source : %D4%1E%05%DF%12s%EA%80%11%A2%98%C0%CB%91%BD%A6%93%2Ah%EB
Bug 855643 - B2G RIL: actively update networkSelectionMode at the first time querying. r=allstars.chh, a=tef+
Bug 742794 - Client should abort if told to start gecko instance on a used host/port, r=mdas, a=test-only
Bug 823195 - virtualenv should use --no-site-packages by default, r=jgriffin, a=test-only
Bug 826651 - Add XML output path to testvars so that it can be used when saving files related to the results. r=jgriffin, a=test-only
Bug 820463 - Remove the --load-early CLI, r=ahal, a=test-only
Bug 830637 - Increase pageload timeout, r=jgriffin, a=test-only
Bug 833079 - python touch layer should check if element is displayed before acting on it, r=jgriffin, a=test-only
Bug 816246 - Add a 'timeout' kwarg to execute_* in marionette, r=jgriffin, a=test-only
Bug 833007 - Gaia UI tests fail against desktop Firefox OS builds due to tap interaction. r=mdas, a=test-only
Bug 837068 - Allow profile path to be passed in Marionette Tests, r=dburns, a=test-only
Bug 797628 - Use a 320x480 emulator by default, r=ahal, a=test-only
Bug 840636 - Update Mochitest script. r=jgriffin, a=test-only
Bug 838822 - update marionette client version number, r=jgriffin, a=test-only
Bug 827493 - Make Marionette use moznetwork, r=jhammel, a=test-only
Bug 841067 - Use sandboxPrototype rather than __proto__ for marionette sandboxes. r=jgriffin, a=test-only
Bug 843525: update marionette venv to fix missing _sysconfigdata_nd on debians. r=jgriffin, a=test-only