Add enterprise policy to turn off Bluetooth.

components/policy/resources/policy_templates.json

Index: components/policy/resources/policy_templates.json
diff --git a/components/policy/resources/policy_templates.json b/components/policy/resources/policy_templates.json
index 7573cc26f68d8fd272f5f56bcf439ed95addff97..3eac408835fd397dbf94285ca2bca2653c6ed7a9 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -137,7 +137,7 @@
 #   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:
@@ -3076,6 +3076,42 @@
           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': {