* iOS Background Platform Channels (#29665)
* added test that passes before this change, and fails after it
* started supporting backwards compatible usage of setting handlers
This PR changes how embedder API's SendKeyData sends ui.KeyData to the framework. The packets are now sent over the existing platform messenger, reusing the entirety of its code path and functionalities while keeping the embedder API unchanged
This makes sure the frame timings recorder and vsync waiter implementations get
the correct refresh rate if or when it adjusts at runtime. This should be OK
because we'll only query the refresh rate when the display metrics actually
change, which is much less frequent than every frame. I experimented with an NDK
implementation in the previous patch, but that vastly restricts the API levels
we can support, and currently on API 30 and 31 it just calls Java methods
through JNI anyway.
I've refactored the way Display updates are reported so that AndroidDisplay can
just dynamically get the refresh rate correctly. These values are used by a
service protocol extension and by some Stopwatches on the CompositorContext.
See also #29765Fixesflutter/flutter#93688Fixesflutter/flutter#93698
* Revert "Revert "Android Background Platform Channels (#29147)""
This reverts commit 7ed91e14ccc1f5ffc4cb13d1d37e27d370c8f7cd.
* Made this PR less of a breaking change by keeping setMessageHandler's signature the same
Used the the `misspell` tool available at
https://github.com/client9/misspell, then applied hand-corrections. It's
possible we could adopt this as a presubmit, but there are still enough
false positives that it may not be worth the effort.
Corrects uses of setup as a verb to 'set up', leaves noun/noun-phrase
forms of setup as 'setup'. Also settles on 'teardown' as opposed to
tear-down for consistency across the codebase.
A few other minor comment/wording corrections.
* Revert "Revert "Set SkPath::setIsVolatile based on whether the path survives at least two frames (#22620)" (#23044)"
This reverts commit feda80cb42f99e2588a9a6b9ab3dd1f812d0f45b.
* Fix tracing
This reverts commit 19ebd61442fd3bf6a69af2156c8b118fc8578ec2.
Additionally, the following _flutter.runInView deadlock is fixed.
Previously, a deadlock would occur when service protocol
_flutter.runInView is used to restart the engine wihtout tearing down
the shell: the shared mutex of the service protocol will be locked
during the restart as it's in the middle of handling a service protocol
message; if ServiceProtocol::AddHandler is also called during the
restart, the deadlock happens as AddHandler also requires such lock.
test/integration.shard/background_isolate_test.dart would fail
without this fix.
