Bug 1334550 - Part 1 - Proxy moz-extension protocol requests to the parent process; r?kmag, r+mayhemer Changes ExtensionProtocolHandler to use remote streams for moz-extension loads of file and JAR URI's to allow for filesystem read-access sandboxing. Adds messaging to PNecko to allow child processes to request an input stream or file descriptor for moz-extension URI's. Add ExtensionProtocolHandler singleton so that NeckoParent can call methods directly and ExtensionProtocolHandler::NewFD can use a new member variable |mFileOpenerThread| to open files. Adds FileDescriptorFile, a limited implementation of nsIFile that wraps a file descriptor, to be sideloaded into nsJARChannels so that extension JAR files can be read using a file descriptor without accessing the filesystem directly. MozReview-Commit-ID: 1pcnIpjz2yR

Bug 1334550 - Part 2 - Add nsISubstitutionObserver and update test_extensionURL.html; r?kmag Adds nsISubstitutionObserver so that substitutions set on a parent nsISubstitutingProtocolHandler which are then propagated to child processes can be observed in the child. Updates test_extensionURL.html to set substitutions on the parent ExtensionProtocolHandler before trying to load moz-extension URI's using those substitutions. MozReview-Commit-ID: JaW1A3uZpoO

Bug 1334550 - Part 1 - Proxy moz-extension protocol requests to the parent process; r?kmag, r?mayhemer Changes ExtensionProtocolHandler to use remote streams for moz-extension loads of file and JAR URI's to allow for filesystem read-access sandboxing. Adds messaging to PNecko to allow child processes to request an input stream or file descriptor for moz-extension URI's. Add ExtensionProtocolHandler singleton so that NeckoParent can call methods directly and ExtensionProtocolHandler::NewFD can use a new member variable |mFileOpenerThread| to open files. Adds FileDescriptorFile, a limited implementation of nsIFile that wraps a file descriptor, to be sideloaded into nsJARChannels so that extension JAR files can be read using a file descriptor without accessing the filesystem directly. MozReview-Commit-ID: 1pcnIpjz2yR

Bug 1367560 - dom/filesystem/tests/test_basic.html ASSERT failure on OS X with level 3 due to /Volumes restriction Avoid calling IsDirectory() because it requires a stat call and we may not have access to the directory due to sandboxing. MozReview-Commit-ID: BTRsZO6zO3

Bug 1367619 - Use RWLock when accessing font prefs service off main thread; r?heycam MozReview-Commit-ID: Dxdq6Etbwxa

Bug 1360282 - Always call `show` to open the sidebar, even when it's called from startDelayedLoad By running through the same path anytime the side is shown it will be easier to implement the sidebar-button as a toggle, since we can rely on consistent state to determined which sidebar was opened last MozReview-Commit-ID: 14HXtr8uNmb

Bug 1359976: base worker payload generation on worker-type; r?wcosta r?aki To date we have variously specified both worker-type and worker-implementation, often manually coordinated. We also embedded a few awkward assumptions such as that the native engine only runs on OS X. But a worker type has one and only one implementation, and that implementation is stable over time (as changing it would require simultaneous landings on all trees). Instead, this change makes worker-type the primary configuration, and derives both a worker implementation (defining the payload format) and worker OS (determining what to include in the payload) from that value. The derivation occurs when deciding how to implement a particular job, where the run_using functions are distinguished by worker implementation. The two-part logic to determine how and where to run a test task based on its platform is combined into a single transform, `set_worker_type`. This contains some other related changes: - MOZ_AUTOMATION is set in specific jobs, rather than everywhere docker-worker is used - the URL to test packages is factored out into a shared function - docker-worker test defaults are applied in `mozharness_test.py` - the WORKER_TYPE array in `task.py`, formerly mixing two types of keys, is split - the 'invalid' workerType is assigned an 'invalid' implementation - all tasks that do not use job descriptions but use docker-worker, etc. have `worker.os` added Tested to not produce a substantially different taskgraph for a regular push, a try push, or a nightly cron. MozReview-Commit-ID: LDHrmrpBo7I

Bug 1359976: remove references to now-unused test-platform-phylum; r=wcosta MozReview-Commit-ID: A86tEB4nbIx

Bug 1359976: clean out un-handled optionally_keyed_by; r=wcosta While this was allowed by the schema, it would never be resolved, and was unused. MozReview-Commit-ID: LIxJmr9ZSdK

temp scripts MozReview-Commit-ID: Gg516lxJfYq

Bug 1367568 part 4: Add mochitest to ensure we don't reflow too much for "overflow" changes on <body>. r?bz MozReview-Commit-ID: KD0nv0ckKu

Bug 1360282 - Always call `show` to open the sidebar, even when it's called from startDelayedLoad By running through the same path anytime the side is shown it will be easier to implement the sidebar-button as a toggle, since we can rely on consistent state to determined which sidebar was opened last MozReview-Commit-ID: 14HXtr8uNmb

Bug 1367735 - Do not attempt to generate or install headers or other compile related files during artifact builds. r=mshal This patch stops GENERATED_FILES from being run during export for artifact builds and prevents EXPORTS from being processed because some of these will depend on generated headers. MozReview-Commit-ID: BHZBFbVHwPT

Bug 1351111 - Add unit tests for setTitle and getTitle r?mixedpuppy MozReview-Commit-ID: KsdqHBzuWJi

Bug 1351111 - Add support for setTitle and getTitle r?mixedpuppy MozReview-Commit-ID: 9B0RaOJjTxc

Bug 1351111 - Add support for updating existing browser actions r?sebastian MozReview-Commit-ID: 7fuDRmR75WD

Bug 1367735 - Do not attempt to generate or install headers or other compile related files during artifact builds. r=mshal This patch stops GENERATED_FILES from being run during export for artifact builds and prevents EXPORTS from being processed because some of these will depend on these generated headers. MozReview-Commit-ID: BHZBFbVHwPT

Bug 1367735 - Do not attempt to generate or install headers or other compile related files during artifact builds. r=mshall This patch stops GENERATED_FILES from being run during export for artifact builds and prevents EXPORTS from being processed because some of these will depend on these generated headers. MozReview-Commit-ID: 7A4rbh20ZJh

Bug 1347894 - Converted Promise-heavy functions to async/await; r?tromey, ntim MozReview-Commit-ID: 9PSyvkZggys

Bug 1347894 - convert uses of 'defer' to 'new Promise' in client/scratchpad; r?tromey MozReview-Commit-ID: A7ndfU2hArd