Remove Command.bind_to_tool.
This is a refactoring change that shouldn't affect behavior.
Pros:
- Removes a method; makes set-up of Command classes simpler.
- Net decrease in lines of code.
Cons:
- Requires explicitly setting self._tool in all subclasses
of AbstractRebaseliningCommand in the execute method.
Committed:
https://crrev.com/b6ddfced42442d4245d72103db8f0a4d28fd8ef1
Cr-Commit-Position: refs/heads/master@{#414163}