Remove policy references to wimax and bluetooth shill types

Bug: chromium:954635
Change-Id: Iacb78c434999fabd1f1fdadc9fdca0d8829cb26f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1754089
Commit-Queue: Alex Khouderchah <akhouderchah@chromium.org>
Reviewed-by: Pavol Marko <pmarko@chromium.org>
Reviewed-by: Lutz Justen <ljusten@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688166}

components/policy/proto/chrome_device_policy.proto

@@ -222,8 +222,7 @@ message AutoUpdateSettingsProto {
   // The types of connections that are OK to use for OS updates. OS updates
   // potentially put heavy strain on the connection due to their size and may
   // incur additional cost. Therefore, they are by default not enabled for
-  // connection types that are considered expensive, which include WiMax,
-  // Bluetooth and Cellular at the moment.
+  // connection types that are considered expensive (currently only Cellular).
   repeated ConnectionType allowed_connection_types = 5;
 
   // This has been replaced by |reboot_after_update| below.

components/policy/resources/policy_templates.json

@@ -7961,9 +7961,9 @@
       'id': 146,
       'caption': '''Connection types allowed for updates''',
       'tags': [],
-      'desc': ''' The types of connections that are allowed to use for OS updates. OS updates potentially put heavy strain on the connection due to their size and may incur additional cost. Therefore, they are by default not enabled for connection types that are considered expensive, which include WiMax, Bluetooth and Cellular at the moment.
+      'desc': ''' The types of connections that are allowed to use for OS updates. OS updates potentially put heavy strain on the connection due to their size and may incur additional cost. Therefore, they are by default not enabled for connection types that are considered expensive (currently only "cellular").
 
-      The recognized connection type identifiers are "ethernet", "wifi", "wimax", "bluetooth" and "cellular".''',
+      The recognized connection type identifiers are "ethernet", "wifi", and "cellular".''',
     },
     {
       'name': 'DeviceUpdateHttpDownloadsEnabled',