Add policies for controlling the roaming profile status and location.

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 121 matching lines @@
 #   templates and documentation. The policy definition list that Chrome sees
 #   will include policies marked with 'future'. If a WIP policy isn't meant to
 #   be seen by the policy providers either, the 'supported_on' key should be set
 #   to an empty list.
 #
 # IDs:
 #   Since a Protocol Buffer definition is generated from this file, unique and
 #   persistent IDs for all fields (but not for groups!) are needed. These are
 #   specified by the 'id' keys of each policy. NEVER CHANGE EXISTING IDs,
 #   because doing so would break the deployed wire format!
-#   For your editing convenience: highest ID currently used: 357
+#   For your editing convenience: highest ID currently used: 359
 #
 # Placeholders:
 #   The following placeholder strings are automatically substituted:
 #     $1 -> Google Chrome / Chromium
 #     $2 -> Google Chrome OS / Chromium OS
 #     $3 -> Google Chrome Frame / Chromium Frame
 #     $6 is reserved for doc_writer
 #
 # Device Policy:
 #   An additional flag 'device_only' (optional, defaults to False) indicates
@@ skipping 1314 matching lines @@
       'desc': '''Disables data synchronization in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> using Google-hosted synchronization services and prevents users from changing this setting.
 
       If you enable this setting, users cannot change or override this setting in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>.
 
       If this policy is left not set Google Sync will be available for the user to choose whether to use it or not.
 
       To fully disable Google Sync, it is recommended that you disable the Google Sync service in the Google Admin console.''',
       'arc_support': 'Disabling Google Sync will cause Android Backup and Restore to not function properly.',
     },
     {
+      'name': 'RoamingProfileSupportEnabled',
+      'type': 'main',
+      'schema': { 'type': 'boolean' },
+      'supported_on': ['chrome.win:57-'],
+      'features': {
+        'dynamic_refresh': False,
+        'per_profile': False,
+      },
+      'example_value': True,
+      'id': 358,
+      'caption': '''Enable the creation of roaming copies for <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> profile data.''',
+      'tags': ['local-data-access'],
+      'desc': '''Enables the creation of roaming copies for <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> profile data.
+
+      If you enable this setting, the settings stored in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> profiles like bookmarks, autofill data, passwords etc. will also be written to a file stored in the Roaming user profile folder or a location specified by the Administrator through the <ph name="ROAMINGPROFILELOCATION_POLICY_NAME">$1<ex>RoamingProfileLocation</ex></ph> policy.

[emaxx, 2016/12/22 13:05:24]

nit: s/ etc./, etc./

[pastarmovj, 2016/12/22 13:19:50]

Done.

+
+      Google Sync is automatically disabled when this policy is enabled.
+
+      To prevent accidental data leaks it is advisable to also set the <ph name="SIGNINALLOWED_POLICY_NAME">$1<ex>SigninAllowed</ex></ph> policy to False.

[emaxx, 2016/12/22 13:05:24]

The SigninAllowed policy is deprecated:
https://www.chromium.org/administrators/policy-list-3#SigninAllowed
The docs recommend using SyncDisabled instead. Though it's not clear to me
whether this policy would make sense in this context.

[pastarmovj, 2016/12/22 13:19:50]

As per discussion. The policy should still work but the documentation is not
correct right now.

I filed http://crbug/676619 to track this issue.

+
+      If this policy is disabled or left not set only the regular local profiles will be used.'''
+    },

[emaxx, 2016/12/22 13:05:24]

Not sure, but maybe it would make sense to add 'label' here too, as for the
RoamingProfileLocation policy.

[pastarmovj, 2016/12/22 13:19:50]

Done.

+    {
+      'name': 'RoamingProfileLocation',
+      'type': 'string',
+      'schema': { 'type': 'string' },
+      'supported_on': ['chrome.win:57-'],
+      'features': {
+        'dynamic_refresh': False,
+        'per_profile': False,
+      },
+      'example_value': '${roaming_app_data}\\chrome-profile',
+      'id': 359,
+      'caption': '''Set the roaming profile directory''',
+      'tags': ['local-data-access'],
+      'desc': '''Configures the directory that <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> will use for storing the roaming copy of the profiles.
+
+      If you set this policy, <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> will use the provided directory to store the roaming copy of the profiles if the <ph name="ROAMINGPROFILESUPPORTENABLED_POLICY_NAME">$1<ex>RoamingProfileSupportEnabled</ex></ph> policy has been enabled. If the <ph name="ROAMINGPROFILESUPPORTENABLED_POLICY_NAME">$1<ex>RoamingProfileSupportEnabled</ex></ph> policy is disabled or left unset the value stored in this policy is not used.
+
+      See https://www.chromium.org/administrators/policy-list-3/user-data-directory-variables for a list of variables that can be used.
+
+      If this policy is left not set the default roaming profile path will be used.''',
+      'label': '''Set the roaming profile directory''',
+    },
+    {
       'name': 'SigninAllowed',
       'type': 'main',
       'schema': { 'type': 'boolean' },
       'supported_on': ['chrome.*:27-', 'android:38-'],
       'features': {
         'dynamic_refresh': True,
         'per_profile': True,
       },
       'deprecated': True,
       'example_value': True,
@@ skipping 8005 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': [],
 }