Bug 973706 - Fix broken Casting:Stop functionality r=wesj
Bug 973707 - Remove unused support for sending extra data when starting a casting app r=wesj
Bug 973988 - DOM Promise constructor should call the executor with "undefined" as thisArg. r=bz
bug 967341 - uri management r=honzab
Bug 972940 - Rename XPCOM_CC_ env vars to MOZ_CC_. r=smaug
Bug 901597, part 1 - Move CC logging logic into nsCCParams. r=smaug
Bug 901597, part 2 - Add environment var to CC log only main or worker threads. r=smaug
Bug 951491 - Ensure ResumeTimeouts() after FreeInnerObjects() does nothing. r=bz
Bug 966762 - Add chrome JS function to unlink ghost windows. r=smaug
Bug 974165 - bump marionette-client version to 0.7.4 and release to pypi
Bug 949600 - Sync mozbase to m-c one last time, r=wlach
Bug 949600 - Update CLOBBER to test mozfile changes which previously broke it
Bug 964885 - Implement stacking context behavior of CSS will-change. r=dbaron

--HG--
extra : rebase_source : 9417239e40a13df22c207838faf64b67d9027f6e
Merge m-c to inbound.
Bug 974347 - Improve bounds handling of non-rendered elements. r=jwatt
Bug 972170 - Add zram reporting to about:memory. r=njn
Bug 973977 - Mark SharedStub hidden to fix ppc64 build failure. r=froydnj
Bug 974227 - Allow readlink while sandboxed to work around bug 964455. r=kang
Bug 974486 - Remove unused OS/2 special directories. r=jimm
Bug 972591, part 1 - Remove some trailing whitespace from nsXBLPrototypeBinding. r=bz