Added support for the content protection profile to AttestationFlow.

WATCHLISTS

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Watchlist Rules
 # Refer: http://dev.chromium.org/developers/contributing-code/watchlists
 
 # IMPORTANT: The regular expression filepath is tested against each path using
 # re.search, so it is not usually necessary to add .*.
 
@@ skipping 138 matching lines @@
       'filepath': 'chrome/browser/ui/views',
     },
     'chromedriver': {
       'filepath': 'chrome/test/chromedriver'
     },
     'chromeos': {
       'filepath': 'chromeos/',
     },
     'chromeos_attestation': {
       'filepath': 'chromeos/attestation/|'\
-                  'chrome/browser/chromeos/attestation/',
+                  'chrome/browser/chromeos/attestation/|'\
+                  'chrome/browser/extensions/api/enterprise_platform_keys_private/',
     },
     'chromeos_calculator': {
       'filepath': 'chrome/common/extensions/docs/examples/apps/calculator/',
     },
     'chromeos_login': {
       'filepath': 'chrome/browser/chromeos/login/|'\
                   'chrome/browser/ui/webui/chromeos/login/|'\
                   'chrome/browser/resources/chromeos/login/',
     },
     'chromeos_net': {
@@ skipping 617 matching lines @@
     'views': ['tfarina@chromium.org'],
     'views_core': ['ben+watch@chromium.org'],
     'website_settings': ['markusheintz@chromium.org'],
     'webkit': ['darin-cc@chromium.org'],
     'worker': ['jam@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
   },
 }