diff -r 000000000000 -r 6474c204b198 mobile/android/base/GeckoHalDefines.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/GeckoHalDefines.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko;
+
+public class GeckoHalDefines
+{
+    /*
+     * Keep these values consistent with |SensorType| in Hal.h
+    */
+    public static final int SENSOR_ORIENTATION = 0;
+    public static final int SENSOR_ACCELERATION = 1;
+    public static final int SENSOR_PROXIMITY = 2;
+    public static final int SENSOR_LINEAR_ACCELERATION = 3;
+    public static final int SENSOR_GYROSCOPE = 4;
+    public static final int SENSOR_LIGHT = 5;
+
+    public static final int SENSOR_ACCURACY_UNKNOWN = -1;
+    public static final int SENSOR_ACCURACY_UNRELIABLE = 0;
+    public static final int SENSOR_ACCURACY_LOW = 1;
+    public static final int SENSOR_ACCURACY_MED = 2;
+    public static final int SENSOR_ACCURACY_HIGH = 3;
+};