Remove remote tree host and some related input and metro_driver code

chrome/chrome_browser.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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 1347 matching lines @@
       'browser/first_run/try_chrome_dialog_view.h',
       'browser/first_run/upgrade_util.cc',
       'browser/google/did_run_updater_win.cc',
       'browser/google/did_run_updater_win.h',
       'browser/hang_monitor/hang_crash_dump_win.cc',
       'browser/hang_monitor/hang_crash_dump_win.h',
       'browser/hang_monitor/hung_plugin_action.cc',
       'browser/hang_monitor/hung_plugin_action.h',
       'browser/hang_monitor/hung_window_detector.cc',
       'browser/hang_monitor/hung_window_detector.h',
-      'browser/metro_viewer/chrome_metro_viewer_process_host_aurawin.cc',
-      'browser/metro_viewer/chrome_metro_viewer_process_host_aurawin.h',
       'browser/password_manager/password_manager_util_win.cc',
       'browser/password_manager/password_manager_util_win.h',
     ],
     'chrome_browser_non_win_sources': [
       'browser/profile_resetter/triggered_profile_resetter_stub.cc',
       'browser/profiles/profile_shortcut_manager_stub.cc',
     ],
     # Sources (generally "desktop OS importers") used only on Mac & Windows.
     'chrome_browser_win_mac_sources': [
       'browser/crash_upload_list_crashpad.cc',
@@ skipping 2438 matching lines @@
             '../chrome_elf/chrome_elf.gyp:dll_hash',
             '../components/components.gyp:browser_watcher',
             '../components/components.gyp:browser_watcher_client',
             '../google_update/google_update.gyp:google_update',
             '../third_party/iaccessible2/iaccessible2.gyp:iaccessible2',
             '../third_party/isimpledom/isimpledom.gyp:isimpledom',
             '../third_party/kasko/kasko.gyp:kasko',
             '../ui/metro_viewer/metro_viewer.gyp:metro_viewer_messages',
             '../ui/views/controls/webview/webview.gyp:webview',
             '../ui/views/views.gyp:views',
-            '../win8/win8.gyp:metro_viewer',
           ],
           'export_dependent_settings': [
             '../third_party/kasko/kasko.gyp:kasko',
             '../ui/views/controls/webview/webview.gyp:webview',
             '../ui/views/views.gyp:views',
           ],
           'conditions': [
             ['branding!="Chrome"', {
               'dependencies!': [
                 '../google_update/google_update.gyp:google_update',
@@ skipping 339 matching lines @@
             '../components/components.gyp:omnibox_browser',
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }