Bug 1103196 - Error on encountering invalid certificate; r?automatedtester When arriving at a document which baseURI starts with `about:certerror` will cause Marionette to now return `error.InsecureCertificateError`. This is mandated by the WebDriver specification. This does, however, mark a non-backwards compatible change in Marionette. It is assumed we will be able to mitigate this change in error type as few consumers, if any, rely on the more generic type considering we did not support invalid TLS certificates prior to this push. MozReview-Commit-ID: JcIMvCXimB

Bug 1103196 - Add insecure certificate error; r?automatedtester MozReview-Commit-ID: 26wwOuqWhog

Bug 1103196 - Remove non-conformant acceptSslCerts capability; r?automatedtester `acceptSslCerts` has been replaced by `acceptInsecureCerts`. MozReview-Commit-ID: 79KbRoQb1dW

Bug 1103196 - Add acceptInsecureCerts capability; r?automatedtester Reads the `acceptInsecureCerts` capability and sets the session state. MozReview-Commit-ID: KVErmdxwXQB

Bug 1103196 - Logically reorder variables defining session state; r?automatedtester No functional changes in this patch. MozReview-Commit-ID: IWaao8AuZib

Bug 1103196 - Mark specificationLevel capability as proprietary; r?automatedtester The `specificationLevel` capability has been removed from the WebDriver specification, and will be removed in a future change to Marionette. This change makes this clear by moving it down to the list of proprietary Marionette capabilities. MozReview-Commit-ID: BMTuXBDZ8WV

Bug 1103196 - Add HTTPS fixture server for Marionette; r?automatedtester,whimboo,maja_zf This patch makes testing/marionette/harness/marionette/runner/httpd.py capable of spinning up an HTTPS server with self-signed certificate. It also introduces testing/marionette/harness/marionette/runner/serve.py that is capable of managing the HTTP- and HTTPS fixture servers as subprocesses, allowing them to operate independently. serve.py uses inter-process communication based on channels (from `multiprocessing.Pipe`) to query methods on the httpd served in each process, which is used to get absolute URLs from the main process. This is useful as servers can delegate port allocation to the system socket service by atomically binding to port 0, guaranteeing that the chosen port is uncontested. It is also used to perform synchronous and graceful shutdown of the httpd. MozReview-Commit-ID: 9OlW6F1w0AN

Bug 1313989 - Remove MutexAutoUnlock in nsThread::GetIdleEvent. r?mattwoodrow,froydnj Rewrite VsyncRefreshDriverTimer::GetTimerRate to always use the cached value of the vsync rate in VsyncChild to avoid processing events on the main thread. Since VsyncChild::GetTimerRate is called in VsyncRefreshDriverTimer's constructor, that cached value is bound to be set soon. This should make the period of time we need to guess in VsyncRefreshDriverTimer::GetTimerRate very short. MozReview-Commit-ID: 1bnHNXAP8jY

Bug 1317983 - Remove navigator.mozBrowserElementProxy; r=baku This was implemented in bug 1196654 for the b2g system app, and is no longer being used.

Bug 1317198 - Check if a tab is null before trying to get its id in GeckoApp.onPause() r=sebastian

Bug 1314932 - Reduce content-process startup time on MacOSX by passing the system font list from chrome to content process via the GetXPCOMProcessAttributes message. r=mstange

Bug 1316629 - migrate dom/html/test/test_img_complete.html to web-platform-test. r=jgraham MozReview-Commit-ID: 7tyxMzVQ1g2

Bug 1317770 - Reset sjs file to enable multiple run in same session r=jmaher MozReview-Commit-ID: 8ebeVXRUtWb

Bug 1311149 - Remove the b2g preallocated app support; r=baku

Bug 1310845 - Remove support for mozapp iframes; r=fabrice,jryans,baku,mcmanus This patch removes support for mozapp iframes, leaving support for mozbrowser iframes intact. Some of the code has been rewritten in order to phrase things in terms of mozbrowser only, as opposed to mozbrowser or app. In some places, code that was only useful with apps has been completely removed, so that the APIs consumed can also be removed. In some places where the notion of appId was bleeding out of this API, now we use NO_APP_ID. Other notions of appId which were restricted to this API have been removed.

Bug 1317725 -Correct creation of Sliced Remote Blob actorss when used in FormData in workers, r=smaug

Merge mozilla-central to inbound

Backed out changeset bc0e63d09f83 (bug 1314932) for causing merge conflicts with mozilla-central/autoland and so blocking m-i to m-c merge

Backed out changeset 7d1f7dd996f7 (bug 1310845)

Backed out changeset af3eb6a8e0ae (bug 1317111)