Added experimental Touch.tilt, Touch.tiltDirection support for Android

content/public/android/java/src/org/chromium/content/browser/MotionEventUtil.java

+// Copyright 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.content.browser;
+
+import android.view.InputDevice;
+import android.view.MotionEvent;
+
+import org.chromium.base.CalledByNative;
+import org.chromium.base.JNINamespace;
+
+/**
+ * TODO
+ */
+@JNINamespace("JNI_MotionEventUtil")
+final class MotionEventUtil {
+    /**
+     */
+    @CalledByNative
+    public static float getAxisValueOrNaN(MotionEvent event, int axis, int pointerIndex) {
+        InputDevice device = event.getDevice();
+        InputDevice.MotionRange range = device.getMotionRange(axis);
+        if (range == null || range.getRange() == 0.0)
+            return Float.NaN;
+        return event.getAxisValue(axis, pointerIndex);
+    }
+}