/usr/share/unity/scopes/searchin.scope is in unity-scopes-master-default 6.8.2+16.04.20160212.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | [Scope]
GroupName=com.canonical.Unity.Scope.Home
UniqueName=/com/canonical/unity/masterscope/searchin
Icon=
CategoryIcon=/usr/share/icons/unity-icon-theme/places/svg/group-internet.svg
Name=Search in
Type=web
IsMaster=true
[Desktop Entry]
X-Ubuntu-Gettext-Domain=unity-scope-home
[Category global]
Name=Search in
Icon=
DedupField=uri
|