Implement Enterprise Key API.

chrome/app/policy/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 94 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: 199
+#   For your editing convenience: highest ID currently used: 201
 #
 # 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 4387 matching lines @@
       'example_value': 'restricted',
       'id': 199,
       'future': True,
       'caption': '''Set the restriction on the fetching of the Variations seed''',
       'desc': '''Add a parameter to the fetching of the Variations seed in <ph name="PRODUCT_OS_NAME">$2<ex>Google Chrome OS</ex></ph>.
 
       If specified, will add a query parameter called 'restrict' to the URL used to fetch the Variations seed. The value of the parameter will be the value specified in this policy.
 
       If not specified, will not modify the Variations seed URL.''',
     },
+    {
+      'name': 'Attestation',
+      'type': 'group',
+      'caption': 'Remote Attestation',
+      'desc': 'Configure the remote attestation with TPM mechanism.',
+      'policies': [
+        {
+          'name': 'AttestationEnabledForUser',
+          'type': 'main',
+          'schema': { 'type': 'boolean' },
+          'supported_on': ['chrome_os:28-'],
+          'features': {
+            'dynamic_refresh': True,
+            'per_profile': True,
+          },
+          'example_value': True,
+          'id': 200,
+          'caption': '''Enable remote attestation for the user.''',
+          'desc': '''If true, the user can use the hardware on Chrome devices to remote attest its identity to the privacy CA via the Enterprise Platform Keys API chrome.enterprise.platformKeysPrivate.challengeUserKey().
+
+          If it is set to false, or if it is not set, calls to the API will fail with an error code.''',
+        },
+        {
+          'name': 'AttestationExtensionWhitelist',
+          'type': 'list',
+          'schema': {
+            'type': 'array',
+            'items': { 'type': 'string' },
+          },
+          'supported_on': ['chrome_os:28-'],
+          'features': {
+            'dynamic_refresh': True,
+            'per_profile': True,
+          },
+          'example_value': ['ghdilpkmfbfdnomkmaiogjhjnggaggoi'],
+          'id': 201,
+          'caption': '''Extensions allowed to to use the remote attestation API.''',
+          'desc': '''This policy specifies the allowed extensions to use Enterprise Platform Keys API chrome.enterprise.platformKeysPrivate.challengeUserKey() for remote attestation. Extensions must be added to this list to use the API.
+
+          If an extension is not in the list, or the list is not set, the call to the API will fail with an error code.''',
+        },
+      ],
+    },
   ],
   'messages': {
     # Messages that are not associated to any policies.
     'win_supported_winxpsp2': {
       'desc': '''A label specifying the oldest possible compatible version of Windows. This text will appear right next to a label containing the text 'Supported on:'.''',
       'text': '''Microsoft Windows XP SP2 or later'''
     },
     'mac_chrome_preferences': {
       'desc': '''A text indicating in Mac OS X Workgroup Manager, that currently the preferences of Chrome are being edited''',
       'text': '''<ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> preferences'''
@@ skipping 84 matching lines @@
       'desc': '''Text appended in parentheses to the policy name to indicate that it has been deprecated''',
       'text': 'deprecated',
     },
     'doc_recommended': {
       '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)',
     },
   },
   'placeholders': [],
 }