Fix Settings app expand arrow for P

Change-Id: I0f339dda0213d8c98cf7fe8297f8b1dc8ddbd457
Signed-off-by: Josh Fox (XlxFoXxlX) <joshfox87@gmail.com>
diff --git a/themes/darktheme/settings/res/drawable-anydpi/ic_arrow_down_24dp.xml b/themes/darktheme/settings/res/drawable-anydpi/ic_arrow_down_24dp.xml
new file mode 100644
index 0000000..e8f49ee
--- /dev/null
+++ b/themes/darktheme/settings/res/drawable-anydpi/ic_arrow_down_24dp.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="@*android:color/accent_device_default_dark"
+        android:pathData="M12,16.41l-6.71,-6.7l1.42,-1.42l5.29,5.3l5.29,-5.3l1.42,1.42z"/>
+</vector>