AndroidOverlay implementation using Dialog.

content/public/android/java/src/org/chromium/content/browser/framehost/RenderFrameHostImpl.java

Index: content/public/android/java/src/org/chromium/content/browser/framehost/RenderFrameHostImpl.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/framehost/RenderFrameHostImpl.java b/content/public/android/java/src/org/chromium/content/browser/framehost/RenderFrameHostImpl.java
index 6e19a87e89917e2513be543f1b1db2fbae0cd562..f477ad06d2094be2d3f9c3083e9f6768f3c73402 100644
--- a/content/public/android/java/src/org/chromium/content/browser/framehost/RenderFrameHostImpl.java
+++ b/content/public/android/java/src/org/chromium/content/browser/framehost/RenderFrameHostImpl.java
@@ -4,6 +4,7 @@
 
 package org.chromium.content.browser.framehost;
 
+import org.chromium.base.UnguessableToken;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.content_public.browser.RenderFrameHost;
@@ -77,5 +78,15 @@ public class RenderFrameHostImpl implements RenderFrameHost {
         return mIncognito;
     }
 
+    /**
+     * Return the AndroidOverlay routing token for this RenderFrameHostImpl.
+     */
+    public UnguessableToken getAndroidOverlayRoutingToken() {
+        if (mNativeRenderFrameHostAndroid == 0) return null;
+        return nativeGetAndroidOverlayRoutingToken(mNativeRenderFrameHostAndroid);
+    }
+
     private native String nativeGetLastCommittedURL(long nativeRenderFrameHostAndroid);
+    private native UnguessableToken nativeGetAndroidOverlayRoutingToken(
+            long nativeRenderFrameHostAndroid);
 }