Demo UI for device discovery and registration

chrome/chrome_browser_ui.gypi

Index: chrome/chrome_browser_ui.gypi
diff --git a/chrome/chrome_browser_ui.gypi b/chrome/chrome_browser_ui.gypi
index 70ae5f9325e4cef71a4c08f36337219b3975a3bf..9ee037e28b325eba2ed5aa76d6e0ae4b7c226ac1 100644
--- a/chrome/chrome_browser_ui.gypi
+++ b/chrome/chrome_browser_ui.gypi
@@ -2112,10 +2112,6 @@
         'browser/ui/webui/inspect_ui.h',
         'browser/ui/webui/instant_ui.cc',
         'browser/ui/webui/instant_ui.h',
-        'browser/ui/webui/local_discovery/local_discovery_ui.cc',
-        'browser/ui/webui/local_discovery/local_discovery_ui.h',
-        'browser/ui/webui/local_discovery/local_discovery_ui_handler.cc',
-        'browser/ui/webui/local_discovery/local_discovery_ui_handler.h',
         'browser/ui/webui/media/webrtc_logs_ui.cc',
         'browser/ui/webui/media/webrtc_logs_ui.h',
         'browser/ui/webui/memory_internals/memory_internals_handler.cc',
@@ -3074,6 +3070,14 @@
             'browser/ui/webui/media/webrtc_logs_ui.h',
           ],
         }],
+        ['enable_mdns==1', {
+            'sources': [
+              'browser/ui/webui/local_discovery/local_discovery_ui.cc',
+              'browser/ui/webui/local_discovery/local_discovery_ui.h',
+              'browser/ui/webui/local_discovery/local_discovery_ui_handler.cc',
+              'browser/ui/webui/local_discovery/local_discovery_ui_handler.h',
+            ]
+        }]
       ],
     },
   ],