ChromeOS: Implement CaptivePortalAuthenticationIgnoresProxy policy.

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 105 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: 294
+#   For your editing convenience: highest ID currently used: 295
 #
 # 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 1203 matching lines @@
         'per_profile': True,
       },
       'deprecated': True,
       'example_value': True,
       'id': 65,
       'caption': '''Clear site data on browser shutdown (deprecated)''',
       'desc': '''This policy has been retired as of <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> version 29.''',
       'label': '''Clear site data on browser shutdown (deprecated)''',
     },
     {
+      'name': 'CaptivePortalAuthenticationIgnoresProxy',
+      'type': 'main',
+      'schema': { 'type': 'boolean' },
+      'supported_on': ['chrome_os:41-'],
+      'features': {
+        'can_be_recommended': False,
+        'dynamic_refresh': True,
+        'per_profile': True,
+      },
+      'example_value': True,
+      'default_for_enterprise_users': False,
+      'id': 295,
+      'caption': '''Captive portal authentication ignores proxy''',
+      'desc': '''This policy allows <ph name="PRODUCT_OS_NAME">$2<ex>Google Chrome OS</ex></ph> to bypass any proxy for captive portal authentication.
+
+      This policy only takes effect if a proxy is configured (for example through policy, by the user in chrome://settings, or by extensions).
+
+      If you enable this setting, any captive portal authentication pages (i.e. all web pages starting from captive portal signin page until <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> detects succesful internet connection) will be displayed in a separate window ignoring all policy settings and restrictions for the current user.
+
+      If you disable this setting or leave it unset, any captive portal authentication pages will be shown in a (regular) new browser tab, using the current user's proxy settings.''',
+    },
+    {
       'name': 'Proxy',
       'type': 'group',
       'caption': '''Proxy server''',
       'desc': '''Allows you to specify the proxy server used by <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> and prevents users from changing proxy settings.
 
       If you choose to never use a proxy server and always connect directly, all other options are ignored.
 
       If you choose to auto detect the proxy server, all other options are ignored.
 
       For detailed examples, visit:
@@ skipping 6002 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">http://www.chromium.org/administrators/complex-policies-on-windows<ex>http://www.chromium.org/administrators/complex-policies-on-windows</ex></ph>''',
     },
   },
   'placeholders': [],
 }