Move webstorePrivate DelegatedInstall functions into new dashboardPrivate API

chrome/common/extensions/api/schemas.gypi

 # Copyright 2014 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.
 
 {
   'sources': [
     '<@(schema_files)',
   ],
   'variables': {
     'main_schema_files': [
@@ skipping 12 matching lines @@
       'chrome_web_view_internal.json',
       'cloud_print_private.json',
       'command_line_private.json',
       'content_settings.json',
       'context_menus_internal.json',
       'context_menus.json',
       'cookies.json',
       'copresence.idl',
       'copresence_private.idl',
       'cryptotoken_private.idl',
+      'dashboard_private.json',
       'data_reduction_proxy.json',
       'debugger.json',
       'desktop_capture.json',
       'developer_private.idl',
       'dial.idl',
       'downloads.idl',
       'downloads_internal.idl',
       'easy_unlock_private.idl',
       'experience_sampling_private.json',
       'feedback_private.idl',
@@ skipping 124 matching lines @@
           '<@(webrtc_schema_files)',
         ],
       }],
     ],
     'cc_dir': 'chrome/common/extensions/api',
     'root_namespace': 'extensions::api::%(namespace)s',
     'bundle_name': 'Chrome',
     'impl_dir_': 'chrome/browser/extensions/api',
   },
 }