Remove chromecast::InitializeWebUI() not used any more.

chromecast/chromecast.gyp

 # 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.
 
 {
   'variables': {
     'android_support_v13_target%':
         '../third_party/android_tools/android_tools.gyp:android_support_v13_javalib',
     'chromium_code': 1,
     'chromecast_branding%': 'Chromium',
@@ skipping 133 matching lines @@
         'browser/metrics/cast_metrics_prefs.h',
         'browser/metrics/cast_metrics_service_client.cc',
         'browser/metrics/cast_metrics_service_client.h',
         'browser/metrics/cast_stability_metrics_provider.cc',
         'browser/metrics/cast_stability_metrics_provider.h',
         'browser/metrics/platform_metrics_providers.h',
         'browser/service/cast_service.cc',
         'browser/service/cast_service.h',
         'browser/url_request_context_factory.cc',
         'browser/url_request_context_factory.h',
-        'browser/webui/webui_cast.h',
         'common/cast_content_client.cc',
         'common/cast_content_client.h',
         'common/cast_paths.cc',
         'common/cast_paths.h',
         'common/cast_resource_delegate.cc',
         'common/cast_resource_delegate.h',
         'common/chromecast_config.cc',
         'common/chromecast_config.h',
         'common/chromecast_switches.cc',
         'common/chromecast_switches.h',
         'common/platform_client_auth.h',
         'common/pref_names.cc',
         'common/pref_names.h',
         'renderer/cast_content_renderer_client.cc',
         'renderer/cast_content_renderer_client.h',
         'renderer/key_systems_cast.cc',
         'renderer/key_systems_cast.h',
       ],
       'conditions': [
         ['chromecast_branding=="Chrome"', {
           'dependencies': [
             '<(cast_internal_gyp):cast_shell_internal',
           ],
         }, {
           'sources': [
             'browser/cast_network_delegate_simple.cc',
             'browser/devtools/remote_debugging_server_simple.cc',
             'browser/metrics/platform_metrics_providers_simple.cc',
-            'browser/webui/webui_cast_simple.cc',
             'common/chromecast_config_simple.cc',
             'common/platform_client_auth_simple.cc',
             'renderer/key_systems_cast_simple.cc',
           ],
           'conditions': [
             ['OS=="android"', {
               'sources': [
                 'browser/service/cast_service_android.cc',
                 'browser/service/cast_service_android.h',
               ],
@@ skipping 280 matching lines @@
           'sources': [
             'browser/test/chromecast_browser_test.cc',
             'browser/test/chromecast_browser_test.h',
             'browser/test/chromecast_browser_test_runner.cc',
           ],
         },
       ],  # end of targets
     }],
   ],  # end of conditions
 }