Take a snapshot of the AXTree

content/public/android/java/src/org/chromium/content_public/browser/AccessibilitySnapshotCallback.java

Index: content/public/android/java/src/org/chromium/content_public/browser/AccessibilitySnapshotCallback.java
diff --git a/content/public/android/java/src/org/chromium/content_public/browser/AccessibilitySnapshotCallback.java b/content/public/android/java/src/org/chromium/content_public/browser/AccessibilitySnapshotCallback.java
new file mode 100644
index 0000000000000000000000000000000000000000..993ce1376eb7155858b589a7ec8ca0a6fc9c011f
--- /dev/null
+++ b/content/public/android/java/src/org/chromium/content_public/browser/AccessibilitySnapshotCallback.java
@@ -0,0 +1,15 @@
+// Copyright 2015 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_public.browser;
+
+/** Callback interface for WebContents RequestAXTreeSnapshot(). */
+public abstract class AccessibilitySnapshotCallback {
+
+    /**
+     * Provide accessibility node data. The root node will be null if the
+     * accessibility tree cannot be parsed due to a failure/error.
+     */
+    public abstract void onAccessibilitySnapshot(AccessibilitySnapshotNode root);
+}