[flutter_tools] replace MockFlutterVersion usage with fake where possible, move from context (#77390)

Revert "[showModalBottomSheet] fix: showModalBottomSheet does not move along keyboard (#71636)" (#77286)

This is a manual roll since it requires adding a new SemanticsAction to
an element in the flutter_test SemanticsAction matchers test which was
added as part of https://github.com/flutter/engine/pull/24734.

https://github.com/flutter/engine/compare/299eb3e710c1...67abe7f9a9e4

2021-03-05 skia-flutter-autoroll@skia.org Roll Skia from 994a571fc79a to 532138cea7ea (4 revisions) (flutter/engine#24812)
2021-03-05 skia-flutter-autoroll@skia.org Roll Dart SDK from b321d01eec78 to 4693d6d4f88e (1 revision) (flutter/engine#24811)
2021-03-05 skia-flutter-autoroll@skia.org Roll Dart SDK from 835da00aa6b5 to b321d01eec78 (1 revision) (flutter/engine#24808)
2021-03-05 skia-flutter-autoroll@skia.org Roll Skia from d42fe062d0a7 to 994a571fc79a (1 revision) (flutter/engine#24806)
2021-03-05 skia-flutter-autoroll@skia.org Roll Skia from 3b58d38966f4 to d42fe062d0a7 (2 revisions) (flutter/engine#24805)
2021-03-05 skia-flutter-autoroll@skia.org Roll Skia from 6ba242d2a201 to 3b58d38966f4 (1 revision) (flutter/engine#24804)
2021-03-05 skia-flutter-autoroll@skia.org Roll Dart SDK from 1b674d73af53 to 835da00aa6b5 (1 revision) (flutter/engine#24803)
2021-03-05 chris@bracken.jp Update cppwinrt to build 2.0.210304.5 (flutter/engine#24801)
2021-03-05 skia-flutter-autoroll@skia.org Roll Skia from 55aaefe687c7 to 6ba242d2a201 (18 revisions) (flutter/engine#24799)
2021-03-05 47866232+chunhtai@users.noreply.github.com Adds set text action for voice access (flutter/engine#24734)
2021-03-04 jason-simmons@users.noreply.github.com SkParagraph: support multiple default font families (flutter/engine#24662)
2021-03-04 skia-flutter-autoroll@skia.org Roll Clang Mac from MQQ43_LGr... to MRLGJYv8V... (flutter/engine#24794)
2021-03-04 jason-simmons@users.noreply.github.com Allow calls to legacyMakeTypeface in the AssetFontManager (flutter/engine#24612)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC cbracken@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

eb86dfcf6 [google_maps_flutter_web] Downgrade mockito in example app. (flutter/plugins#3679) (#77314)

This adds support for building and running manual tests, such as the raw
keyboard test on Windows desktop.

* 32c8686d0 Roll Fuchsia Linux SDK from _vRi_XkB7... to zPlM6iYY3... (flutter/engine#24782)

* e90ff67f6 Guard metal rendering behind SHELL_ENABLE_METAL (flutter/engine#24727)

* e8da85948 Roll Dart SDK from 96183eef80b7 to 8d3ed9fda5f1 (1 revision) (flutter/engine#24784)

* ce695c41f Roll Fuchsia Mac SDK from ohpC1XzxY... to Ks1dVR_ST... (flutter/engine#24791)