In comments, replaced `...using using...` with just `...using...`

https://skia.googlesource.com/skia.git/+log/f1eda00bf6b0..e978ca297965


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https://skia.googlesource.com/skia.git/+log/3bdaa46bff71..f1eda00bf6b0


Created with:
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https://skia.googlesource.com/skia.git/+log/763fc966993d..3bdaa46bff71


Created with:
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https://skia.googlesource.com/skia.git/+log/e008d6feb2d0..763fc966993d


Created with:
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The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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https://skia.googlesource.com/skia.git/+log/1ae419b62b2b..e008d6feb2d0


Created with:
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The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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https://skia.googlesource.com/skia.git/+log/628f0a57d102..1ae419b62b2b


Created with:
  gclient setdep -r src/third_party/skia@1ae419b62b2b

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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https://skia.googlesource.com/skia.git/+log/d7a7586b0d2f..628f0a57d102


Created with:
  gclient setdep -r src/third_party/skia@628f0a57d102

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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https://skia.googlesource.com/skia.git/+log/348a03729796..d7a7586b0d2f


Created with:
  gclient setdep -r src/third_party/skia@d7a7586b0d2f

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Also tracks the order of embedded views from frame to frame, and only
removes and reattaches subviews if there is a structural change to the
UIView hierarchy.

This PR breaks PlatformViewsController's construction dependency on FlutterView,
which allows making FlutterEngine its owner instead of
FlutterViewController.

Also renamed the FlutterScreenshotDelegate to FlutterViewEngineDelegate
which is FlutterView's delegate to the engine, and expanded it to
provide a view embedder.

https://skia.googlesource.com/skia.git/+log/9985a27c06ad..348a03729796


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Otherwise, this may trigger `FML_DCHECK(needs_painting())`. We haven't
caused crashes for our users because it probably requires a locally
debug engine build to trigger the assert.

https://skia.googlesource.com/skia.git/+log/83d923f38664..9985a27c06ad


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https://skia.googlesource.com/skia.git/+log/4d8f48db9ef5..83d923f38664


Created with:
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The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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https://skia.googlesource.com/skia.git/+log/69a72945dcdd..4d8f48db9ef5


Created with:
  gclient setdep -r src/third_party/skia@4d8f48db9ef5

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https://skia.googlesource.com/skia.git/+log/1801b94e85b4..69a72945dcdd


Created with:
  gclient setdep -r src/third_party/skia@69a72945dcdd

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This allows the framework to decide whether and when a touch event
sequence arrives to the embedded view. Which gives the framework the
ability to manage hit testing and gesture disambiguation for embedded
UIViews.

We achieve this by wrapping each embedded UIView with another UIView that has
a custom UIGestureRecognizer that delays touch events from being
delivered, and another UIGestureRecognizer that makes sure to let
Flutter know of events that are hit tested to the embedded view.

https://skia.googlesource.com/skia.git/+log/4c169456061d..1801b94e85b4


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* Ensure Simulator publishes mDNS records on loopback interface.

https://skia.googlesource.com/skia.git/+log/78252fedaab9..4c169456061d


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https://skia.googlesource.com/skia.git/+log/52a715455181..78252fedaab9


Created with:
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https://skia.googlesource.com/skia.git/+log/5785405afa1b..52a715455181


Created with:
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https://skia.googlesource.com/skia.git/+log/dde307f14273..5785405afa1b


Created with:
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https://skia.googlesource.com/skia.git/+log/14768f64fba3..dde307f14273


Created with:
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https://skia.googlesource.com/skia.git/+log/ca44d5d85895..14768f64fba3


Created with:
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https://skia.googlesource.com/skia.git/+log/d48b7a881b24..ca44d5d85895


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* Roll back _countryCode assert - breaking change

* Add tests back in

* Add Locale.fromComponents.

* Change toString from underscores to dashes. Expand the unit tests.

* Rename 'fromComponents' to 'create'. Change variants from String to List<String>.

* Use default for language parameter. Use hashCode/hashList.

* Have toString() stick with old (underscore) behaviour.

* Demonstrate empty-list bug in assert code.

* Fix empty-list assert bug.

* Add ignores for lint issues. Unsure about 71340 though.

* Fix operator== via _listEquals.

* Remove length-checking asserts: we're anyway not checking characters in fields.

* Documentation update.

* Change reasoning for ignore:prefer_initializing_formals.

* Try 'fromSubtags' as new constructor name.

* Documentation improvements based on Pull Request review.

* Assert-fail for invalid-length subtags and drop bad subtags in production code.

* Revert "Assert-fail for invalid-length subtags and drop bad subtags in production code."

This reverts commit d6f06f5e7b3537d60000c47641580475ef16abbe.

* Re-fix Locale.toString() for variants=[].

* Tear out variants, in case we want to have one fewer pointer in the future.

* Make named parameters' names consistent with member names.

* Also remove _listEquals: no longer in use.

* Lint fix.

* Fix code review nits.

* Lint fix for assert, and a couple more not-zero-length-string asserts.

* Code Review: two of three nits addressed...

* Review fix: change 'should' to 'must' for subtag prescriptions.

* Assert-check that countryCode is never ''.

https://skia.googlesource.com/skia.git/+log/ab18c8e6cc20..d48b7a881b24


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This reverts a change in buildroot that caused regressions (see https://github.com/flutter/flutter/issues/23678).

https://skia.googlesource.com/skia.git/+log/68825776f4b4..ab18c8e6cc20


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The platform views embedding is still WIP, and until we dynamically
merge the gpu and platform threads based on the presence of an embedded
view in the scene fetching the view embedder is not thread safe.

This PR essentially disables iOS platform views embedding, we will
re-enable once dynamic thread merging is supported.

https://skia.googlesource.com/skia.git/+log/1de48d8040aa..68825776f4b4


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https://skia.googlesource.com/skia.git/+log/797197a772b8..1de48d8040aa


Created with:
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https://skia.googlesource.com/skia.git/+log/79c96811863f..797197a772b8


Created with:
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