add support for the boneheaded method of receiving input events that is used by NativeActivity apps

currently, our "not-actually-a-queue" implementation is quite ugly,
hopefully it might be possible to make it look somewhat sane while
not needing to make it as much of a queue as it is on android

src/api-impl/android/view/Window.java

@@ -33,4 +33,10 @@ public class Window {
 	}
 
 	private native void set_widget_as_root(long native_window, long widget);
+
+	public native void take_input_queue(long native_window, InputQueue.Callback callback, InputQueue queue);
+
+	public void takeInputQueue(InputQueue.Callback callback) {
+		take_input_queue(native_window, callback, new InputQueue());
+	}
 }