This reverts commit 0fb4406c.

This reverts commit e03029ef.

This is already handled by pkg:shelf
There is some subtlety with String here, since String.length might not
align with the size in bytes over the wire, depending on the contents
and the encoding

Best to just let pkg:shelf handle it

* roll packages

* fix dwds

* empty

---------
Co-authored-by: fluttergithubbot <fluttergithubbot@gmail.com>

* [web] Put all index.html operations in one place

* review comments

* fix build

* change quotes

* fix test

The changes to the Dart SDK have rolled so the backward compatibility
is no longer needed.

* dart fix --apply

* manual fixes

* fix after merge conflicts

* review

- Matches new location in the Dart SDK.
   https://dart-review.googlesource.com/c/sdk/+/275482
- Includes fall back logic so the existing and new locations will work
  depending on the file that is available.

* Work in progress.

* Some fixes to the command line.

* Bootstrapping works.

* Change kickoff order to maximize concurrency.

* Fix analyzer errors and formatting issues.

* Fix doc comment.

* Added unit tests for some of the web targets.

* Format issue.

* Add an integration test that builds an app to wasm.

* Add a todo for depfiles.

* Formatting.

* Apparently the license header needs to say 2014.

* `file://` URIs confuse dart2wasm on Windows. Just use absolute paths.

* Update unit tests to match new path passing.

* Have a distinct build directory for wasm, and fixes for some upstream changes.

You can now specify a --local-web-sdk flag to point to a wasm_release folder. This will make it so that only artifacts that pertain to the web sdk are overridden to point to the wasm_release folder. Other artifacts (such as impellerc) will pull from the cache, or from the --local-engine path if that is specified.

This also uses precompiled platform kernel files for both ddc and dart2js

* [flutter_tools] Add --dump-info, --no-frequency-based-minification flags

Also some cleanup to named arguments to the buildWeb function

Fixes https://github.com/flutter/flutter/issues/115854

* fix tests

This reverts commit f8f69575.

* Migrate packages/flutter_tools/bin

* Fix NPE

* Fix test

* Fix test

* Fix l10n optionalParameters

* Fix ChromeTab nullability

* Fix another type cast error

* Fix another cast error

* Fix another cast error (copied from #110711)

* Fix NPE

* Fix another NPE

* Assert that testDirectory is not null

The flag is true by default so the behavior does not change.

Next steps:

Use the flag for updated debugger module names:
  - Frontend server: make the current behavior controlled
    by the flag non-conditional
  - Frontend server: add more debugging names changes under
    the same flag, false by default
  - Dwds: make changes required for the new module names.
  - Flutter tools: when matching dwds changes roll to flutter,
    pass the flag to the frontend server again.

- Cleanup:
  - Frontend server: make new behavior default
  - Flutter tools: remove uses of the flag.
  - Frontend server: remove the flag.

Towards: https://github.com/dart-lang/webdev/issues/1692
Helps: https://github.com/flutter/flutter/issues/106727

* Temporarily remove a bogus warning until fixed by dwds update

* Addressed CR feedback

Revert "Read dart_plugin_registrant path from FlutterProject to support non-standard path." (#107850)

* Provide flutter sdk kernel files to dwds launcher instead of dart ones

* Update log test to report all warnings

* Update licences for new files

* Addressed CR comments

* Addressed CR comments

Co-authored-by: Michael Goderbauer <goderbauer@google.com>