[CrOS Nearby] Allow chrome://nearby-internals to run without a flag

It previously was gated on the Nearby Share flag, but Nearby Connections
is now shared with Phone Hub. This CL allows the debug UI to be shown
regardless of whether Nearby Share is enabled.

Change-Id: Iee53dcc2d24597c12673c1e7dfd9ccae06c977c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2523762
Commit-Queue: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: James Vecore <vecore@google.com>
Auto-Submit: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: James Vecore <vecore@google.com>
Cr-Commit-Position: refs/heads/master@{#825157}

chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc

@@ -773,10 +773,8 @@ WebUIFactoryFunction GetWebUIFactoryFunction(WebUI* web_ui,
           web_app::SystemAppType::CAMERA)) {
     return &NewWebUI<chromeos::CameraAppUI>;
   }
-  if (base::FeatureList::IsEnabled(features::kNearbySharing)) {
-    if (url.host_piece() == chrome::kChromeUINearbyInternalsHost)
-      return &NewWebUI<NearbyInternalsUI>;
-  }
+  if (url.host_piece() == chrome::kChromeUINearbyInternalsHost)
+    return &NewWebUI<NearbyInternalsUI>;
   if (arc::IsArcAllowedForProfile(profile)) {
     if (url.host_piece() == chrome::kChromeUIArcGraphicsTracingHost) {
       return &NewWebUI<chromeos::ArcGraphicsTracingUI<