Bug 1347031 - Move the MediaCache off of opening its temporary file fd synchronously in the content process. r?jwwang In bug 1346987 we're attempting to remove uses of the NS_OpenAnonymousTemporaryFile() in the content process as it sends a synchronous IPC to the parent process on the main thread, which can cause UI jank. This patch makes the MediaCache use the async anonymous temporary file creation function added in bug 1346987. The file descriptor is held by the FileBlockCache. This object buffers data passed to it in memory, and defers writing of said data to another thread. I added the async wait for the file descriptor to be inside that async "defer to other thread" step. This means that while the content process is waiting for the file descriptor to come down from the parent process, we'll buffer media data being streamed in memory. Given that our MSE implementation will buffer up to 100MB of media data in memory anyway, it seems that more buffering in the src=url case while we wait for an async IPC to do a round trip to the main process is acceptable. MozReview-Commit-ID: 3OTBTWw5pr0

Bug 1346987 - Fixup thread safety issues in patches in bug 1346987. MozReview-Commit-ID: 1Ryy1Fz4Tvv

Bug 1345511 - pt 3 - start using IPC call for stun addrs in PCMedia. r=bwc Two new calls are added to NrIceCtx. 1) A static call to allow StunAddrsRequestParent to get stun addrs from the main process. 2) A call to allow StunAddrsRequestChild to pass the new stun addrs back to PeerConnectionMedia on the content process. PeerConnectionMedia, when running in e10s mode, sets up the StunAddrsRequestChild and makes the async request to get the stun addrs. When they are returned, it sets the stun addrs in NrIceCtx avoid the network calls that would otherwise cause a further restricted sandbox to fail. MozReview-Commit-ID: C2hYBzm6WNv

Bug 1345511 - pt 2 - add IPC mechanism for getting stun addrs on main process. r=bwc,jduell PStunAddrsRequest.ipdl defines the new IPC protocol to get stun addrs on the main process. StunAddrsRequestChild requests the stun addrs from the parent. StunAddrsRequestParent uses a static method on NrIceCtx to get the stun addrs from the STS thead and sends the addrs back to the child process. NrIceStunAddr (nricestunaddr.{cpp|h}) wraps nr_local_addr and makes it easier to serialize/deserialize over IPC. NrIceStunAddrMessageUtils follows the pattern used by other Necko IPC classes to define top-level serialization/deserialization calls used by the IPC framework. Modifications under netwerk/ipc are to connect the new IPC protocol to get stun addrs to PNecko since it is a network related IPC protocol. MozReview-Commit-ID: GyEapBe5krl

Bug 1345511 - pt 1 - nICEr changes to support stun addr gathering from main process. r=bwc Expose a tweaked version of nr_ice_get_local_addresses to allow callers to provide pre-fetched stun addrs if they are available. By default, the normal call to nr_ice_gather calls this with no pre-fetched stun addrs (read non-e10s). In e10s, the stun addrs are discovered on the main process and provided to nr_ice_get_local_addreses. When nr_ice_gather is called from the content process the local addresses have already been gathered. Because we're now serializing nr_local_addr (wrapped by NrIceStunAddr), we can't assume that certain pointer references in the source nr_local_addr are correct when calling nr_local_addr_copy. New non-pointer-arithmetic version of setting up the pointer on the copied nr_local_addr is used. Also easier to understand when walking up to it the first time. MozReview-Commit-ID: KVRFl4dfr7J

Bug 1347589: Implementation of Marionette Set Window Rect. r?ato This implements Set Window Rect from the W3C WebDriver specification to allow us to change the size and position of a window in one call MozReview-Commit-ID: KxwJyyjg1VU

Bug 1318532 - Force remote='true' and noisolation='true' to WebExtensions mozbrowser iframes. r=smaug MozReview-Commit-ID: K6AC918A4Zh

Bug 1318532 - Support <iframe mozbrowser> in WebExtension documents. r=smaug MozReview-Commit-ID: DksnSiWpleI

Bug 1197420 Part 4 Tests for optional permissions MozReview-Commit-ID: 8uViXB1Jgz3

Bug 1197420 Part 3 Apply dynamic permission changes MozReview-Commit-ID: 6TdcUv1fHPh

Bug 1197420 Part 2 Initial browser.permissions api support With this patch, permissions are not actually applied, but the permissions api is in place. MozReview-Commit-ID: CTaXz5sa1xy

Bug 1197420 Part 1 Schema groundwork for optional permissions MozReview-Commit-ID: JIfPYjxjFfM

Bug 1348122 - Share code between the customizable zoom control and the location bar's zoom indicator. r?gijs MozReview-Commit-ID: 2xRqVzHAwEY

Bug 1339440 use frameUrl to match context menus on frames MozReview-Commit-ID: LIlAZIP4HNx

Bug 1347619 - Change boxmodel.css to use calc(50% - 1px) instead of 49.5%. r?gl MozReview-Commit-ID: 1CA5WgfKNL7

Bug 1344844 - Enable flake8 rule E222: "multiple spaces after operator". r?dexter This patch enables flake8 rule E222: "multiple spaces after operator" in toolkit/components/telemetry by removing the relative E222 entry from toolkit/components/telemetry/.flake8 and fixing the files for which the E222 error was reported. Precisely 1 error violating E222 rule was found and solved. MozReview-Commit-ID: 3xx09jkVu3E

Bug 1347700 - Fix async loading of content scripts MozReview-Commit-ID: LjuiizBh1OK

Bug 1339739 fix intermittent timeout by splitting browser_ext_sidebarAction.js, r?kmag MozReview-Commit-ID: KeBJHSXo23a

Bug 893505 - Simplify the application update UI There's quite a few changes in here. At a high level, all we're trying to do is to replace the old update popup with a less intrusive and more modern doorhanger (set of doorhangers) for various update failure conditions. MozReview-Commit-ID: 24sESMTosNX

Bug 1338347 - Record frame throughput ratio for APZ animations r?botond MozReview-Commit-ID: 4BiFjBvgvfP