Bug 973306 - Don't build JIT tests that depend on Ion with --disable-ion.
Bug 971171 - Measure with telemetry how many times people see about:newtab. r=ttaubert,bsmedberg
bug 969504 - avoid using Segoe UI Light or Semibold for U+25B6 due to bad glyph on Win7. r=jdaggett
Bug 966397. Don't try to add fixed-pos metadata for inactive layer subtrees. r=mattwoodrow

--HG--
extra : rebase_source : 119635c63af471a0d6384901d99f242b14a39e9a
Bug 966397. Part 2: Don't look at ancestors of mContainerReferenceFrame when searching for a fixed-pos ancestor we belong to, since we'll change coordinate spaces. The metadata will be attached to an ancestor layer in that case. r=mattwoodrow

--HG--
extra : rebase_source : cfb56bb2111abce99cd475b9fa8c516d53621ed4
Bug 960603 - Uninitialised value use relating to nsJSContext::EndCycleCollection.  r=mccr8.

--HG--
extra : rebase_source : 06a45cf8a46045bfafb6b95864a3ce6c2d0b04a0
Bug 960059 - When an HTMLMediaElement outputs to a MediaStream, make sure to install the refill callback in any case. r=roc

--HG--
extra : rebase_source : a690159d6395ed7bab2a053bbb1cc65e11bb8be6
Backed out changeset 4d0197840932 (bug 960057) for invalid bug number in the commit message.
Bug 960057 - When an HTMLMediaElement outputs to a MediaStream, make sure to install the refill callback in any case. r=roc DONTBUILD
Bug 970895: Use I/O loop for polling memory-pressure events, r=dhylands

The code for polling sysfs for memory-pressure events currently
runs on a separate thread. This patch implements this functionality
for the I/O thread. This unifies the code base a bit and also safes
some resources.
Bug 960894 - 1/4: allow representing multiple clients in one RIL worker. r=bz
Bug 960894 - 2.a/4: move ril_worker init code out of RadioInterfaceLayer ctor. r=hsinyi
Bug 960894 - 2.b/4: allow sharing WorkerMessenger between RadioInterface instances. r=hsinyi
Bug 960894 - 3.a/4: Move PENDING_NETWORK_TYPE into RIL and rename to pendingNetworkType. r=hsinyi
Bug 960894 - 3.b/4: don't modify global. r=hsinyi
Bug 960894 - 3.c/4: construct global objects from constructors. r=hsinyi
Bug 960894 - 3.d/4: look up foreign objects through 'this.context'. r=hsinyi
Bug 960894 - 3.d.2/4: use 'this.context.clientId'. r=hsinyi
Bug 960894 - 3.d.3/4: use 'this.context.debug'. r=hsinyi
Bug 960894 - 3.e/4: multiple contexts in one RIL worker. r=hsinyi