Remove android_java_ui as it is not used

chrome/browser/media/router/media_router_dialog_controller.cc

 // Copyright 2015 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.
 
 #include "chrome/browser/media/router/media_router_dialog_controller.h"
 
 #include <utility>
 
 #include "chrome/browser/media/router/media_router_metrics.h"
 #include "chrome/common/features.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 
-#if BUILDFLAG(ANDROID_JAVA_UI)
+#if defined(OS_ANDROID)
 #include "chrome/browser/media/android/router/media_router_dialog_controller_android.h"
 #else
 #include "chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.h"
 #endif
 
 namespace media_router {
 
 // static
 MediaRouterDialogController*
 MediaRouterDialogController::GetOrCreateForWebContents(
     content::WebContents* contents) {
-#if BUILDFLAG(ANDROID_JAVA_UI)
+#if defined(OS_ANDROID)
   return MediaRouterDialogControllerAndroid::GetOrCreateForWebContents(
       contents);
 #else
   return MediaRouterDialogControllerImpl::GetOrCreateForWebContents(contents);
 #endif
 }
 
 class MediaRouterDialogController::InitiatorWebContentsObserver
     : public content::WebContentsObserver {
  public:
@@ skipping 78 matching lines @@
 MediaRouterDialogController::TakeCreateConnectionRequest() {
   return std::move(create_connection_request_);
 }
 
 void MediaRouterDialogController::Reset() {
   initiator_observer_.reset();
   create_connection_request_.reset();
 }
 
 }  // namespace media_router