Add SimonVT's android-menudrawer. This will be used in the menu interface for Dolphin Android.

Externals/android-menudrawer/samples/res/layout/activity_contentsample.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/sample_content" />
+
+    <TextView
+        android:id="@+id/contentText"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+
+    <SeekBar
+        android:id="@+id/seekBar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+</LinearLayout>