Add enterprise policy to turn off Bluetooth.

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 119 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: 319
+#   For your editing convenience: highest ID currently used: 320
 #
 # 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 2918 matching lines @@
           'deprecated': True,
           'example_value': 2,
           'id': 149,
           'caption': '''Default mediastream setting''',
           'tags': ['website-sharing'],
           'desc': '''Allows you to set whether websites are allowed to get access to media capture devices. Access to media capture devices can be allowed by default, or the user can be asked every time a website wants to get access to media capture devices.
 
           If this policy is left not set, 'PromptOnAccess' will be used and the user will be able to change it.''',
         },
         {
+          'name': 'DefaultWebBluetoothGuardSetting',
+          'type': 'int-enum',
+          'schema': {
+            'type': 'integer',
+            'enum': [ 2, 3 ],
+          },
+          'items': [
+            {
+              'name': 'BlockWebBluetooth',
+              'value': 2,
+              'caption': '''Do not allow any site to request access to Bluetooth devices via the Web Bluetooth API''',
+            },
+            {
+              'name': 'AskWebBluetooth',
+              'value': 3,
+              'caption': '''Allow sites to ask the user to grant access to a nearby Bluetooth device''',
+            },
+          ],
+          'supported_on': ['chrome_os:50-', 'android:50-', 'chrome.*:50-'],
+          'features': {
+            'dynamic_refresh': True,
+            'per_profile': True,
+          },
+          'example_value': 2,
+          'id': 320,
+          'caption': '''Control use of the Web Bluetooth API''',
+          'tags': ['website-sharing'],
+          'desc': '''Sets whether web pages can use the Web Bluetooth API, described at <ph name="WEB_BLUETOOTH_ON_CHROME_STATUS_LINK">https://www.chromestatus.com/features/5264933985976320</ph>.
+
+          3, 'AskWebBluetooth', allows web pages from asking users to grant access to nearby Bluetooth LE devices. If granted, the web page has full access to the device's Bluetooth GATT services.

[Thiemo Nagel, 2016/02/22 12:41:51]

For consistency, I'd suggest to better align the description with that other
content settings policies, cf. DefaultMediaStreamSetting for an example.

[Jeffrey Yasskin, 2016/02/22 23:47:10]

Done. Note that
http://www.chromium.org/administrators/policy-list-3#DefaultMediaStreamSetting,
uses 'PromptOnAccess' without ever defining it. It also claims that the policy
lets administrators allow by default, but the policy actually doesn't give that
option.

+
+          2, 'BlockWebBluetooth', prevents web pages from asking users to grant access to nearby Bluetooth LE devices.
+
+          Leaving this policy unset is equivalent to 'AskWebBluetooth'.''',
+        },
+        {
           'name': 'DefaultKeygenSetting',
           'type': 'int-enum',
           'schema': {
             'type': 'integer',
             'enum': [ 1, 2 ],
           },
           'items': [
             {
               'name': 'AllowKeygen',
               'value': 1,
@@ skipping 5275 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': [],
 }