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

content/app/BUILD.gn

Index: content/app/BUILD.gn
diff --git a/content/app/BUILD.gn b/content/app/BUILD.gn
index b83b52998ecaa4a9f2c196d54607b94851ace133..7d3e5ee8f09bbead9eca0d67f24df23a3259893f 100644
--- a/content/app/BUILD.gn
+++ b/content/app/BUILD.gn
@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
+import("//build/config/ui.gni")
 
 content_app_sources = [
   "android/app_jni_registrar.cc",
@@ -49,8 +50,10 @@ if (is_win) {
     "//device/vibration",
     "//skia",
     "//third_party/android_tools:cpu_features",
-    "//ui/android",
   ]
+  if (!use_aura) {
+    content_app_deps += [ "//ui/android" ]
+  }
 }
 
 if (is_ios) {