[Extensions] Add a developerPrivate.updateExtensionConfiguration function
Add a chrome.developerPrivate.updateExtensionConfiguration function, which allows
for setting particular extension traits. Coalesce the existing allow file
access and allow incognito access into this, and add others. Update the
chrome://extensions page to use the new function.
BUG=461039
(get past histogram presubmit warning)
NOTRY=true
Review URL: https://codereview.chromium.org/
997183005
Cr-Commit-Position: refs/heads/master@{#321381}