The histogram 'ExtensionInstallVerifier.InitSignatureCount' is present in
Chromium source code but does not appear in histograms.xml. This means that
data is collected for the histogram but nothing useful is done with it.

The histogram was defined in chrome/browser/extensions/install_verifier.cc at
line 248.

https://cs.chromium.org/chromium/src/chrome/browser/extensions/install_verifier.cc?l=248

It may have moved by the time you read this.

Please remove the histogram 'ExtensionInstallVerifier.InitSignatureCount'
from the source code. If it was very recently added, it may be worth adding
it to histograms.xml instead, but probably not.

This bug was automatically assigned based on git blame information. If you
are not the correct assignee for this bug, please delete the histogram
anyway.