* Add support for experimental flags during hot reload.

* [cupertino_icons] add car, bus, train, paw, controller, and flask icons.

* [#26774] remove whitespace

This implements support for hovering mouse pointers, so that mice connected to Android devices, and ChromeOS devices running Android apps will work properly.

It teaches flutter_test about hover events, which required changing how they are created and used.

Also modifies AnnotatedRegion to allow a region that can be located someplace other than just the origin.

Along with tests for all of the above.

Fixes #5504

* Fixes cursor on iOS devices

* adds haptic vibration to switch

* Revert f9e6242d

* fix pubspec

* finish pubspec upgrade

This status shows for the duration of the run, not just while starting. It looks kinda weird in the editors to show a progress bar for "Starting Xcode build" and then removing it once it completes.

* Add docs and sample for takeException

* fix sample

https://github.com/flutter/engine/compare/36acd02c9412...9b6d5031a3c0

git log 36acd02c9412d0c1e6acbe0fbcb3dd03cda038df..9b6d5031a3c0a4a6b1b5bd66a8e6a7c3c2c7ea0b --no-merges --oneline
9b6d5031a Roll src/third_party/dart a5030ed92f..a5030ed92f (0 commits)
5cfc0249a Roll src/third_party/skia 9bc76d96f986..d41c1876d834 (6 commits) (flutter/engine#7586)
204a09910 Roll src/third_party/skia a7cb690dc8fe..9bc76d96f986 (1 commits) (flutter/engine#7585)
fe2609f5c Roll src/third_party/skia 74b6cf3a7215..a7cb690dc8fe (1 commits) (flutter/engine#7584)
4f02f7e22 Roll src/third_party/skia aa6ca0a8bfc1..74b6cf3a7215 (2 commits) (flutter/engine#7583)

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

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (jsimmons@google.com), and stop
the roller if necessary.

* 4f02f7e22 Roll src/third_party/skia aa6ca0a8bfc1..74b6cf3a7215 (2 commits) (flutter/engine#7583)

* fe2609f5c Roll src/third_party/skia 74b6cf3a7215..a7cb690dc8fe (1 commits) (flutter/engine#7584)

* 204a09910 Roll src/third_party/skia a7cb690dc8fe..9bc76d96f986 (1 commits) (flutter/engine#7585)

* 5cfc0249a Roll src/third_party/skia 9bc76d96f986..d41c1876d834 (6 commits) (flutter/engine#7586)

* 9b6d5031a Roll src/third_party/dart a5030ed92f..a5030ed92f (0 commits)

* Discover port over mDNS

* opt in, only for iOS for now

This reverts commit dd65a546.

This changes the DocSetPlatformFamily key to be "dartlang" instead of the name of the package (usually "flutter"). This is so that the IntelliJ plugin for Dash will be able to go directly to the docs for a symbol from a keystroke, instead of needing to search all the docsets each time.

Without this, flutter isn't part of the list of package names it searches. After this, it finds the flutter docs because they're declared to be part of the "dartlang" family of docs.

Dashing doesn't have a way to configure this, so we modify the Info.plist directly to make the change.

It appears that the encoding Apple is using to ensure their syslog
conforms with the syslog requirement for seven-bit ASCII encoding (see:
RFC 5424) is `vis`.

Details: https://www.freebsd.org/cgi/man.cgi?query=vis&sektion=3

https://github.com/flutter/engine/compare/6d405201fa51...36acd02c9412

git log 6d405201fa51c26b1d5211aa9c857c4286d165af..36acd02c9412d0c1e6acbe0fbcb3dd03cda038df --no-merges --oneline
36acd02c9 Roll src/third_party/dart 8e2f3ea4d6..f4afaee422 (6 commits) (flutter/engine#7581)
6ab84998b Roll src/third_party/skia 7150513754f5..aa6ca0a8bfc1 (1 commits) (flutter/engine#7582)

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

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (jsimmons@google.com), and stop
the roller if necessary.

https://github.com/flutter/engine/compare/23b7e29f043f...6d405201fa51

git log 23b7e29f043fbf69c175450a21b81028deffa470..6d405201fa51c26b1d5211aa9c857c4286d165af --no-merges --oneline
6d405201f Add lcov coverage file generation. (flutter/engine#7579)
f4bdb9488 Roll src/third_party/skia 7fe360cbc01e..7150513754f5 (10 commits) (flutter/engine#7578)
ce44132a1 This is an automated pull request which will automatically merge once checks pass. (flutter/engine#7573)
0dedb56d2 [embedder] Avoid looking for the kernel binary in AOT builds. (flutter/engine#7577)
1dc01adfa Allow generating coverage reports for all unit-tests in the engine. (flutter/engine#7576)

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

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (jsimmons@google.com), and stop
the roller if necessary.