Update policy template for WebRestrictionsAuthority.

components/policy/resources/policy_templates.json

 {
 # policy_templates.json - Metafile for policy templates
 #
 # The content of this file is evaluated as a Python expression.
 #
 # This file is used as input to generate the following policy templates:
 # ADM, ADMX+ADML, MCX/plist and html documentation.
 #
 # Policy templates are user interface definitions or documents about the
 # policies that can be used to configure Chrome. Each policy is a name-value
@@ skipping 8833 matching lines @@
       'tags': [],
       'desc': '''If the policy is set, the UDP port range used by WebRTC is restricted to the specified port interval (endpoints included).
 
       If the policy is not set, or if it is set to the empty string or an invalid port range, WebRTC is allowed to use any available local UDP port.''',
     },
     {
       'name': 'WebRestrictionsAuthority',
       'id': 341,
       'type': 'string',
       'schema' : { 'type': 'string' },
-      'tags': ['filtering'],
+      'tags': ['filtering', 'admin-sharing'],
       'supported_on': ['webview_android:54-'],
+      'future': True,
       'caption': '''Set an external source of URL restrictions''',
       'desc' : '''When this policy is set to a non-empty string the WebView will read URL restrictions from the content provider with the given authority name.''',
       'features': {
         'dynamic_refresh': True,
         'per_profile': False,
       },
       'example_value': 'com.android.chrome.SupervisedUserProvider'
     },
     {
       'name': 'ComponentUpdatesEnabled',
@@ skipping 135 matching lines @@
       'desc': '''Text appended in parentheses next to the policies top-level container to indicate that those policies are of the Recommended level''',
       'text': 'Default Settings (users can override)',
     },
     'doc_complex_policies_on_windows': {
       'desc': '''Text pointing the user to a help article for complex policies on Windows''',
       'text': '''encoded as a JSON string, for details see <ph name="COMPLEX_POLICIES_URL">https://www.chromium.org/administrators/complex-policies-on-windows<ex>https://www.chromium.org/administrators/complex-policies-on-windows</ex></ph>''',
     },
   },
   'placeholders': [],
 }