Bug 816803 - Add system metric and media query keyword to detect whether the current Windows desktop theme supports Aero Glass. r=jimm,sr=roc

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extra : rebase_source : 56b27cbbbcc0cde254ef7aa7087f11360c476390
ï»¿Bug 834091: Verify certificate chain for signed B2G apps as of the current time (now) instead of the signing time, r=bsmith

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extra : amend_source : 86d8ca2b28259aaf41983740b809ef8a51befc4f
extra : rebase_source : e5a1c1199756e929f14852f5c83ba28d097449f4
Bug 782850 fix nsContextMenu to work in social content panels, r=felipe
Backed out changeset e9795d97ccf6 (bug 782850) for M1 failures.
Merge m-c to fx-team.
Merge m-c to inbound.
Bug 802506: add marionette test case for getting IMEI. r=ferjm
Bug 834814 - allow for webgl tests to support mesa llvm driver. r=bjacob

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rename : content/canvas/test/webgl/failing_tests_linux.txt => content/canvas/test/webgl/failing_tests_linux_nvidia.txt
Bug 834414 - Fix leaks caused by missing tab change listener unregistrations. r=sriram
Bug 834414 - Remove unnecessary getInstance call that was leaking an App instance. r=wesj
Bug 834414 - Destroy the SiteIdentityPopup when the activity is destroyed to prevent leaking the activity. r=margaret