Add Kerberos support to webview

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 1836 matching lines @@
           'desc': '''Specifies whether the generated Kerberos SPN should include a non-standard port.
 
           If you enable this setting, and a non-standard port (i.e., a port other than 80 or 443) is entered, it will be included in the generated Kerberos SPN.
 
           If you disable this setting or leave it not set, the generated Kerberos SPN will not include a port in any case.''',
         },
         {
           'name': 'AuthServerWhitelist',
           'type': 'string',
           'schema': { 'type': 'string' },
-          'supported_on': ['chrome.*:9-','android:46-'],
+          'supported_on': ['chrome.*:9-','android:46-','webview_android:49-'],
           'features': {
             'dynamic_refresh': False,
             'per_profile': False,
           },
           'example_value': '*example.com,foobar.com,*baz',
           'id': 29,
           'caption': '''Authentication server whitelist''',
           'tags': [],
           'desc': '''Specifies which servers should be whitelisted for integrated authentication. Integrated authentication is only enabled when <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> receives an authentication challenge from a proxy or from a server which is in this permitted list.
 
@@ skipping 34 matching lines @@
           'caption': '''GSSAPI library name''',
           'tags': [],
           'desc': '''Specifies which GSSAPI library to use for HTTP authentication. You can set either just a library name, or a full path.
 
           If no setting is provided, <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> will fall back to using a default library name.''',
         },
         {
           'name': 'AuthAndroidNegotiateAccountType',
           'type': 'string',
           'schema': { 'type': 'string' },
-          'supported_on': ['android:46-'],
+          'supported_on': ['android:46-','webview_android:49-'],
           'features': {
             'dynamic_refresh': False,
             'per_profile': False,
           },
           'example_value': 'com.example.spnego',
           'id': 305,
           'caption': '''Account type for HTTP Negotiate authentication''',
           'tags': [],
           'desc': '''Specifies the account type of the accounts provided by the Android authentication app that supports HTTP Negotiate authentication (e.g. Kerberos authentication). This information should be available from the supplier of the authentication app. For more details see https://goo.gl/hajyfN.
 
@@ skipping 6253 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': [],
 }