This reverts commit d5b0b3c8.

* Reland: [flutter_tools] File system utilities

* Remove unused imports

This reverts commit 03496606.

* Prposal for supporting URL tunnelling

* Update daemon.md

* Add the ability for daemon to call clients to expose URLs

* Fix dwds mock in web_fs tests

* Fix type error

* Remove build_runner import from run

* Move appStartedTime back to after the app has started

* Remove nested DI scope and pass urlTunneller down

* Fix import

* Tweak TODO

* Fix existing tests

* Fix spec to use result instead of params for response object

* Fix exposeUrl to use a url field, as spec'd

* Test that the daemon's exposeUrl sends a request and handles the response

This reverts commit 2a113165.

* Update project.pbxproj files to say Flutter rather than Chromium

Also, the templates now have an empty organization so that we don't cause people to give their apps a Flutter copyright.

* Update the copyright notice checker to require a standard notice on all files

* Update copyrights on Dart files. (This was a mechanical commit.)

* Fix weird license headers on Dart files that deviate from our conventions; relicense Shrine.

Some were already marked "The Flutter Authors", not clear why. Their
dates have been normalized. Some were missing the blank line after the
license. Some were randomly different in trivial ways for no apparent
reason (e.g. missing the trailing period).

* Clean up the copyrights in non-Dart files. (Manual edits.)

Also, make sure templates don't have copyrights.

* Fix some more ORGANIZATIONNAMEs

* de-null dartDefines in daemon mode
* remove daemonCommand; pipe through dartDefines into Daemon
* pass dartDefiles in attach; add test for --machine mode

* Reland: [flutter_tool] Fuchsia AOT builds

* Fixes

This reverts commit a57dddd2.

* Allow web server device to use extension if started with --start-paused

* Fix comment

* Remove browser-launch option that allowed using Chrome without launching Chrome

The web-server device should now be used if you don't want to launch a browser.

* Add tests for WebServerDevice with --start-paused

* Fixes from rebase

* More fixes from rebase

* Fix from rebase

* Fix condition for page refresh in non-debug builds

* Make dwds conditions match with a new getter

* Add missing .device

* implicit-casts:false on flutter_tools/lib

* address review comments

* use castStringKeyedMap

* introduce {bool,string,strings}Arg

* fix ci

This reverts commit c0af77bf.

This reverts commit e5d6d924.

This reverts commit b9eb3f71.

We fixed the issue by updating the constructors.

This reverts commit 4f385c8f.

So we can test SkSL precompile using the command line tools.
See https://github.com/flutter/engine/pull/12412.