* Migrate packages/flutter_tools/test/commands.shard/permeable

* Fix upgrade_test

* Chris's comments

This reverts commit 3802eb62.

This reverts commit 5fd259be.

* Use `dart __deprecated_pub` instead of `pub` to invoke pub from tools

The top level `pub` commmand has been deprecated and will print
a message. It is however implemented via the __deprecated_pub command
that prints no message.

This reverts commit 7c24ff2c.

Top level `pub` is being deprecated.

* Randomize tests, exclude tests that fail with randomization.

* Disable some more tool tests

This reverts commit 8b6baae4.

Our current top crasher is an unclear error when ProcessManager fails to resolve an executable path. To fix this, we'd like to being adjusting the process resolution logic and adding more instrumentation to track failures. In order to begin the process, the ProcessManager has been folded back into the flutter tool

* opt out the flutter tool

* oops EOF

* fix import

* Update tool_backend.dart

* Update daemon_client.dart

* fix more

* Revert "Add integration_test template to create template (#70240)"

This reverts commit d047d108.

* test

[flutter_tools] handle case where file is deleted by other program or running on read only volume (#66708)

* [flutter_tools] handle case where file is deleted by other program

* Add test cases

* Update file_system.dart

* Update file_system_test.dart

* fix import

* make a static on ErrorHandligFS

* add support for no exit on failure

* address comments

* update doc comment to file or directory