Remove unused WebUI extension files.

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': {
     'chrome_browser_ui_non_ios_sources': [
       'browser/ui/accelerator_utils.h',
       'browser/ui/android/android_about_app_info.cc',
       'browser/ui/android/android_about_app_info.h',
@@ skipping 1864 matching lines @@
       'browser/ui/views/apps/app_window_desktop_native_widget_aura_win.cc',
       'browser/ui/views/apps/app_window_desktop_native_widget_aura_win.h',
       'browser/ui/views/apps/app_window_desktop_window_tree_host_win.cc',
       'browser/ui/views/apps/app_window_desktop_window_tree_host_win.h',
       'browser/ui/views/apps/chrome_apps_client_views_win.cc',
       'browser/ui/views/apps/chrome_native_app_window_views.cc',
       'browser/ui/views/apps/chrome_native_app_window_views.h',
       'browser/ui/views/apps/chrome_native_app_window_views_win.cc',
       'browser/ui/views/apps/chrome_native_app_window_views_win.h',
       'browser/ui/views/apps/desktop_keyboard_capture.cc',
-      'browser/ui/views/apps/desktop_keyboard_capture.h', 
+      'browser/ui/views/apps/desktop_keyboard_capture.h',
       'browser/ui/views/apps/glass_app_window_frame_view_win.cc',
       'browser/ui/views/apps/glass_app_window_frame_view_win.h',
       'browser/ui/views/apps/keyboard_hook_handler.h',
       'browser/ui/views/apps/keyboard_hook_handler_win.cc',
       'browser/ui/views/apps/shaped_app_window_targeter.cc',
       'browser/ui/views/apps/shaped_app_window_targeter.h',
       'browser/ui/views/ash/tab_scrubber.cc',
       'browser/ui/views/ash/tab_scrubber.h',
       'browser/ui/views/autofill/autofill_dialog_views.cc',
       'browser/ui/views/autofill/autofill_dialog_views.h',
@@ skipping 684 matching lines @@
       'browser/ui/extensions/extension_installed_bubble.cc',
       'browser/ui/extensions/extension_installed_bubble.h',
       'browser/ui/webui/extensions/chromeos/kiosk_apps_handler.cc',
       'browser/ui/webui/extensions/chromeos/kiosk_apps_handler.h',
       'browser/ui/webui/extensions/extension_basic_info.cc',
       'browser/ui/webui/extensions/extension_basic_info.h',
       'browser/ui/webui/extensions/extension_error_ui_util.cc',
       'browser/ui/webui/extensions/extension_error_ui_util.h',
       'browser/ui/webui/extensions/extension_icon_source.cc',
       'browser/ui/webui/extensions/extension_icon_source.h',
-      'browser/ui/webui/extensions/extension_info_ui.cc',
-      'browser/ui/webui/extensions/extension_info_ui.h',
       'browser/ui/webui/extensions/pack_extension_handler.cc',
       'browser/ui/webui/extensions/pack_extension_handler.h',
       'browser/ui/webui/voicesearch_ui.cc',
       'browser/ui/webui/voicesearch_ui.h',
     ],
   },
   'targets': [
     {
       'target_name': 'browser_ui',
       'type': 'static_library',
@@ skipping 490 matching lines @@
         ['OS!="android" and OS!="ios"', {
           'dependencies': [
             '../device/bluetooth/bluetooth.gyp:device_bluetooth',
           ],
           'sources': [ '<@(chrome_browser_ui_non_mobile_sources)' ],
         }],
       ],
     },
   ],
 }