Take a snapshot of the AXTree

android_webview/java/src/org/chromium/android_webview/AwContents.java

Index: android_webview/java/src/org/chromium/android_webview/AwContents.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwContents.java b/android_webview/java/src/org/chromium/android_webview/AwContents.java
index 4e8baa3a10886e92e175fd9a8f26a1dab64a092f..6b061fed5198551a1cca956b78e0309cee1dc277 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwContents.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwContents.java
@@ -54,6 +54,7 @@ import org.chromium.content.browser.ContentViewCore;
 import org.chromium.content.browser.ContentViewStatics;
 import org.chromium.content.browser.SmartClipProvider;
 import org.chromium.content.common.CleanupReference;
+import org.chromium.content_public.browser.AccessibilitySnapshotCallback;
 import org.chromium.content_public.browser.GestureStateListener;
 import org.chromium.content_public.browser.JavaScriptCallback;
 import org.chromium.content_public.browser.LoadUrlParams;
@@ -2051,6 +2052,11 @@ public class AwContents implements SmartClipProvider,
         return mWebContents.hasAccessedInitialDocument();
     }
 
+    public void requestAccessibilitySnapshot(AccessibilitySnapshotCallback callback) {
+        if (isDestroyed()) return;
+        mWebContents.requestAccessibilitySnapshot(callback);
+    }
+
     //--------------------------------------------------------------------------------------------
     //  View and ViewGroup method implementations
     //--------------------------------------------------------------------------------------------