tree f98b5cb02e3486ffe63c8962bdefe9f00b7fb46b
parent 795ba05e3cc9e87822d15ec146a174314ed9956f
author Edwin Kempin <ekempin@google.com> 1676455311 +0100
committer Edwin Kempin <ekempin@google.com> 1676886263 +0100

Add a metric to count rebase requests

We want to know how often changes are rebased, how often rebase on
behalf of the uploader is done and how often chains are rebased.

This data is useful to decide:

* How important is it to support rebase on behalf of the uploader when
  rebasing chains (how often is rebase on behalf of the uploader used
  for rebasing single changes vs. how often are chains rebased).
* Can we disallow rebasing on behalf of the rebaser, aka rebases where
  the rebaser takes over the change (number of rebases that are not done
  on behalf of the uploader, e.g. number of rebases where the user
  explicitly deselects 'on behalf of the uploader', once this option is
  added in the UI and set by default).

Release-Notes: skip
Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I70ca4ebab08f030b560e18814be64c35d0129b94