Aura on Android: Remove unnecessary dependencies on ui/android.

content/app/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/chrome_build.gni")
+import("//build/config/ui.gni")
 
 content_app_sources = [
   "android/app_jni_registrar.cc",
   "android/app_jni_registrar.h",
   "android/child_process_service.cc",
   "android/child_process_service.h",
   "android/content_jni_onload.cc",
   "android/content_main.cc",
   "android/content_main.h",
   "android/library_loader_hooks.cc",
@@ skipping 26 matching lines @@
 
 if (is_win) {
   content_app_deps += [ "//sandbox" ]
 } else if (is_android) {
   content_app_sources -= [ "content_main.cc" ]
   content_app_deps += [
     "//content/public/android:jni",
     "//device/vibration",
     "//skia",
     "//third_party/android_tools:cpu_features",
-    "//ui/android",
   ]
+  if (!use_aura) {
+    content_app_deps += [ "//ui/android" ]
+  }
 }
 
 if (is_ios) {
   content_app_sources -= [
     "content_main.cc",
     "mojo/mojo_init.cc",
     "mojo/mojo_init.h",
   ]
 } else {
   content_app_deps += [
@@ skipping 41 matching lines @@
   source_set("child") {
     visibility = [ "//content/public/app:child" ]
 
     sources = content_app_sources
     configs += content_app_extra_configs
     deps = content_app_deps
 
     defines = [ "CHROME_MULTIPLE_DLL_CHILD" ]
   }
 }