ui/base: Enable ui_java dep in the GN version ui_base target.

ui/base/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/ui.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
@@ skipping 623 matching lines @@
       "touch/touch_editing_controller.cc",
       "ui_base_types.cc",
     ]
 
     deps += [ ":ui_base_jni_headers" ]
 
     libs += [ "jnigraphics" ]
   }
 
   if (is_android && is_android_webview_build) {
-    deps += [
-      #TODO(GYP): port this component to GN.
-      #"//ui/android:ui_java",
-    ]
+    deps += [ "//ui/android:ui_java" ]
   }
 
   if (is_android && !use_aura) {
     sources -= [ "cursor/cursor_android.cc" ]
   }
 
   # Aura clipboard.
   if (use_aura) {
     if (use_x11) {
       sources += [ "clipboard/clipboard_aurax11.cc" ]
@@ skipping 244 matching lines @@
     if (is_chromeos) {
       sources -= [
         "dragdrop/os_exchange_data_provider_aurax11_unittest.cc",
         "x/selection_requestor_unittest.cc",
       ]
       deps += [ "//chromeos" ]
     }
   }
 }
 # TODO(GYP) Mac (ui_base_tests_bundle) and Android (ui_base_unittests_apk).