Pass policy VideoCaptureAllowed to ARC

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 5656 matching lines @@
       },
       'example_value': False,
       'id': 167,
       'caption': '''Allow or deny video capture''',
       'tags': [],
       'desc': '''Allow or deny video capture.
 
       If enabled or not configured (default), the user will be prompted for
       video capture access except for URLs configured in the
       VideoCaptureAllowedUrls list which will be granted access without prompting.
+      ARC-apps will be able to access the camera if they have been given
+      permission.
 
       When this policy is disabled, the user will never be prompted and video
       capture only be available to URLs configured in VideoCaptureAllowedUrls.
+      ARC-apps will not be able to access the camera.
 
-      This policy affects all types of video inputs and not only the built-in camera.''',
+      Outside of ARC-apps, this policy affects all types of video inputs and
+      not only the built-in camera.''',
     },
     {
       'name': 'VideoCaptureAllowedUrls',
       'type': 'list',
       'schema': {
         'type': 'array',
         'items': { 'type': 'string' },
       },
       'supported_on': ['chrome.*:29-', 'chrome_os:29-'],
       'features': {
@@ skipping 2833 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': [],
 }