This PR removes the `recordData` method, which I believe is an unhelpful
abstraction for reporting internal processor metrics.
The drawbacks of the function are minor, but briefly:
1. Recording any metric requires passing in zeros for _all other
metrics_. This is cumbersome to extend because any new metric requires
updating the call to `recordData` for all metrics. It's also fragile
because if we have more than a few metrics it is easy to position the
intended metric incorrectly.
2. Every metric describes one data type, which is passed into
`recordData` but then just used as a switch to get back to code that is
specific to that data type.
3. Every call to `recordData` instantiates N variables, where N is the
number of metrics for each data type.
All of this seems unnecessary as we can just report each metric in one
unambiguous line of code.
49339e80cc