* fix gclient runhooks for windows

* remove usage of dartdev command so that gclient runhooks can re-generate package_config.json

* Manual merge or Dart into flutter a3815b6590...24c7666def

dart-lang/sdk@24c7666def Update tests that have the current version number hardcoded
dart-lang/sdk@f88ce7aef5 Increase Dart version to 2.10

* Update language version.

* Update license.

* Hpdate language version.

* Update license.

Work towards flutter/flutter#60999

All usage of .packages must eventually be replace with package_config.json to support language versioning.

This reverts commit 56bb3c5b.

Generate package config during gclient runhooks and update BUILD.gn to reference it

This reverts commit fae8141f.

The dart SDK needs to ship several packages which have opted into null safety for the tech preview. This requires the use of a package_config.json for compilation as this file contains the language versions. Use a dart script to generate the package_config file from the .packages file, and include that in the DEPS hooks section.

Fixes flutter/flutter#60628

* use Object for operator==

* apply style guide for operator==

We can build unoptimized code for easier debugging with this flag.

Includes the icudtl.dat file which is built into the runner
so it can be used in testing from within the fuchsia repo

The Fuchsia artifact builder didn't allow the end user to add more
packages to build for Fuchsia.  The current default is building only
the platform-specific packages; but packages like
`flutter/shell/common:shell_tests` are also defined for Fuchsia but
not compiled by default.

This change makes it less of a hassle to compile such packages.

* 1. Manual roll of Dart 6d4e7d6830...021a49e88c

dart-lang/sdk@021a49e88c Update the way to get feature set and language version.
dart-lang/sdk@d1638508c1 Migration: streamline behavior injection in migration_cli_test.dart.

2. Update ICU dependency and adjust license script to account for this
   change.

* Update license tool signature.

Updates the ANGLE checkout to the latest master. Among other things, picks up fixes for errors when building under Visual Studio 2019.

Part of fix for https://github.com/flutter/flutter/issues/48831

Fixes: fxb/41743

* use clang on Windows for everything but Android

This pulls the Clang build from Chromium. We should eventually switch to use the Fuchsia toolchain when it is available.

use $CIRRUS_BASE_BRANCH for getting the branch name when cloning the flutter repo.

* change the repo fetch script to recognize candidate versions such as flutter-1.17-candidate.3. Originally the script only accepted branches such as v0.7.3 as valid engine branches.

* addressing reviewer comments: changing the release regular expression

Fixes: #43926

Desktop embedding dependencies can trigger gn-generation-time
requiremenets; e.g., the Linux embeddings have pkg-config dependencies.
This can be problematic in some build environments, such as building
flutter_engine.so with a custom sysroot where those higher-level
dependencies aren't available.

This flag allows generating build files that don't have those
dependencies.

- Adds an explicit option for not building the GLFW embedding.
- Disables GLFW by default on Windows, where it's no longer the
  uploaded embedding.
- Moves the X11 pkg-config, which is only used by the GLFW embedding,
  behind the GLFW build flag.

* changing felt script to fetch flutter

* changing the clone_flutter.sh code

* running integration tests with felt on cirrus. fetch framework in CI (not in local).

* only run cirrus tests on chrome. fix a comma in the flutter command path

* adding comments to public flags

* use local engine parameter for flutter pub get

* change flutter executable used for flutter drive command

* fix a cleanup issue. address comments. add toolException. enable web in flutter

* address reviwer comments. fix issue with local-engine

* address reviwer comments. fix issue with local-engine

* using engine/flutter/.dart_tools as clone directory. enabling clone script for local usage

* clean flutter repo with felt clean. add a flag to skip cloning the repo. always clone the repo even for local development, unless this flag is set

* fixing typos. updating readme for the new flag.

* fix directory error

* addressing reviewer comments

Fuchsia is the main consumer of these CIPD packages and - to simplify
its infrastructure - it is migrating its SDK partners over to producing
a CIPD package containing a flat .build-id directory.

This change also updates the CIPD package so that the .build-id
directory is placed at the root.

Bug: fxbug.dev/41443

This reverts commit 4b69cf2c.

Fuchsia is the main consumer of these CIPD packages and - to simplify
its infrastructure - it is migrating its SDK partners over to producing
a CIPD package containing a flat .build-id directory.

This change also updates the CIPD package so that the .build-id
directory is placed at the root.

Bug: fxbug.dev/41443