* Migrate packages/flutter_tools/test/general.shard, part 2/2

* Fix analysis

* Fix tests

* Fix analysis

* Apply suggestions from code review
Co-authored-by: Christopher Fujino <fujino@google.com>
Co-authored-by: Christopher Fujino <fujino@google.com>

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

This PR adds extra timings for a hot reload.
As an example, before a user might see

> Performing hot reload...                                                
> Reloaded 1 of 788 libraries in 554ms.

With this PR it would instead be something like

> Performing hot reload...                                                
> Reloaded 1 of 788 libraries in 554ms (compile: 33 ms, reload: 153 ms, reassemble: 310 ms).

This reverts commit ac3c4435.

* Update flutter_tools to look for new VM service message

The Dart SDK will soon move away from the current Observatory message:

"Observatory listening on ..."

To a new message that no longer references Observatory:

"Dart VM Service listening on ..."

This change updates all tests with mocks to check for the new message
and also adds support for the new message in ProtocolDiscovery.

See https://github.com/dart-lang/sdk/issues/46756

* Fix some parsing locations

* Fix analysis failures

* Update message

* Remove extra comment

* Update message

* Add globals prefix

Dart plugin registration generation depends on the target main file
being set as a define so that it's available in the environment, but the
resident runner wasn't setting it. That worked for initial builds
because of the re-entrant call to `assemble` (which does set it), but
caused Hot Restart to always re-generate the wrapper using
lib/main.dart.

This ensures that the define is set in that codepath as well.

Fixes https://github.com/flutter/flutter/issues/91535

Revert "Reland "Enable caching of CPU samples collected at application startup (#89600)" (#92220)" (#92235)

This reverts commit ba0321e9.

This reverts commit dc7fea8d.

This reverts commit 1d9edde0.

This reverts commit 5fd259be.

* Don't generate plugin registry in ResidentWebRunner

generateDartPluginRegistry was being set to true unconditionally in
ResidentRunner, bypassing the primary check in
DartPluginRegistrantTarget, and the targetPlatform was not set in that
codepath, bypassing the second after the changes in
https://github.com/flutter/flutter/pull/87991. This caused web hot
restarts to be slower due to doing unnecessary work.

This ensures that generateDartPluginRegistry is false in the
ResidentWebRunner to skip that unnecessary step.

Fixes https://github.com/flutter/flutter/issues/91262

* Formatting
Co-authored-by: Zachary Anderson <zanderso@users.noreply.github.com>
Co-authored-by: Zachary Anderson <zanderso@users.noreply.github.com>

* [web] use resident resident runner in flutter drive