* 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

* 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

No code changes, just comments: I spell-checked all the comments in the repo.

* 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

* Switch from using app.progress to app.url for passing web launch urls

* Update daemon.md

* Change app.url -> app.webLaunchUrl

* Add tests for app.webLaunchUrl event

* Update tests with recent changes after rebasing

This reverts commit e5d6d924.

* initial bootstrap script for incremental compiler support

* add more comments

* update to two scripts

Applying our style guide:
https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#have-good-hygiene-when-using-temporary-directories

Add more web tests;use blacklist instead of whitelist

* Stop using build_runner for dart2js

* fixes to yield when computing hashes and to imports

* add missing await

* Update filecache_test.dart

* Fix paths in filecache test

* use file uri for import

* add test cases and configurable override

* remove test dep

* fix filepaths for windows

* test no longer failing

* fix paths for test cases

* fix typo

* address comments

* make a constant

* make filehash async and use constant

* fix silly logic error

* Fix visbility of web server device when Chrome is not available

* Add tests

* Update workflow test

* Fix tests to not rely on Chrome being on the underlying machine