Bug 1263761 - Update defaultSearch in core ping docs for custom search engines. r=gfritzsche
MozReview-Commit-ID: CuISAHVCLnX
--- a/toolkit/components/telemetry/docs/core-ping.rst
+++ b/toolkit/components/telemetry/docs/core-ping.rst
@@ -73,16 +73,19 @@ engine from the search plugins (in order
* In the distribution
* From the localized plugins shipped with the browser
* The third-party plugins that are installed in the profile directory
If the plugins fail to create a search engine instance, this field is also
``null``.
+This field can also be ``null`` when a custom search engine is set as the
+default.
+
profileDate
~~~~~~~~~~~
On Android, this value is created at profile creation time and retrieved or,
for legacy profiles, taken from the package install time (note: this is not the
same exact metric as profile creation time but we compromised in favor of ease
of implementation).
Additionally on Android, this field may be ``null`` in the unlikely event that