Change MojoWebUIController to use mojo::StrongBindingSet.

chrome/chrome_browser_ui.gypi

 # Copyright 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.
 
 {
   'variables': {
     # There are two sections of sources:
     # * "Platform"-based sources (OS, toolkit, etc.)
     # * Feature/directory-based sources (e.g., history, printing)
 
@@ skipping 325 matching lines @@
       'browser/ui/webui/cookies_tree_model_util.cc',
       'browser/ui/webui/cookies_tree_model_util.h',
       'browser/ui/webui/crashes_ui.cc',
       'browser/ui/webui/crashes_ui.h',
       'browser/ui/webui/device_log_ui.cc',
       'browser/ui/webui/device_log_ui.h',
       'browser/ui/webui/domain_reliability_internals_ui.cc',
       'browser/ui/webui/domain_reliability_internals_ui.h',
       'browser/ui/webui/engagement/site_engagement_ui.cc',
       'browser/ui/webui/engagement/site_engagement_ui.h',
+      'browser/ui/webui/engagement/site_engagement_ui_handler.cc',
+      'browser/ui/webui/engagement/site_engagement_ui_handler.h',
       'browser/ui/webui/fallback_icon_source.cc',
       'browser/ui/webui/fallback_icon_source.h',
       'browser/ui/webui/favicon_source.cc',
       'browser/ui/webui/favicon_source.h',
       'browser/ui/webui/fileicon_source.cc',
       'browser/ui/webui/fileicon_source.h',
       'browser/ui/webui/flags_ui.cc',
       'browser/ui/webui/flags_ui.h',
       'browser/ui/webui/gcm_internals_ui.cc',
       'browser/ui/webui/gcm_internals_ui.h',
@@ skipping 16 matching lines @@
       'browser/ui/webui/memory_internals/memory_internals_handler.cc',
       'browser/ui/webui/memory_internals/memory_internals_handler.h',
       'browser/ui/webui/memory_internals/memory_internals_proxy.cc',
       'browser/ui/webui/memory_internals/memory_internals_proxy.h',
       'browser/ui/webui/memory_internals/memory_internals_ui.cc',
       'browser/ui/webui/memory_internals/memory_internals_ui.h',
       'browser/ui/webui/metrics_handler.cc',
       'browser/ui/webui/metrics_handler.h',
       'browser/ui/webui/mojo_web_ui_controller.cc',
       'browser/ui/webui/mojo_web_ui_controller.h',
-      'browser/ui/webui/mojo_web_ui_handler.h',
       'browser/ui/webui/net_export_ui.cc',
       'browser/ui/webui/net_export_ui.h',
       'browser/ui/webui/net_internals/net_internals_ui.cc',
       'browser/ui/webui/net_internals/net_internals_ui.h',
       'browser/ui/webui/ntp/ntp_user_data_logger.cc',
       'browser/ui/webui/ntp/ntp_user_data_logger.h',
       'browser/ui/webui/omnibox/omnibox_ui.cc',
       'browser/ui/webui/omnibox/omnibox_ui.h',
       'browser/ui/webui/omnibox/omnibox_ui_handler.cc',
       'browser/ui/webui/omnibox/omnibox_ui_handler.h',
@@ skipping 2882 matching lines @@
           ],
           'sources': [
             '<@(chrome_browser_ui_non_mobile_sources)',
             '<@(chrome_browser_ui_omnibox_non_mobile_sources)',
           ],
         }],
       ],
     },
   ],
 }