AndroidOverlay implementation using Dialog.

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

Index: content/public/android/java/src/org/chromium/content_public/browser/RenderFrameHost.java
diff --git a/content/public/android/java/src/org/chromium/content_public/browser/RenderFrameHost.java b/content/public/android/java/src/org/chromium/content_public/browser/RenderFrameHost.java
index 5748da23ca00930afded8cc84c8d2064d7b599e4..79aae0d9a038ff63c23686bbc591cf8c20eef078 100644
--- a/content/public/android/java/src/org/chromium/content_public/browser/RenderFrameHost.java
+++ b/content/public/android/java/src/org/chromium/content_public/browser/RenderFrameHost.java
@@ -4,6 +4,8 @@
 
 package org.chromium.content_public.browser;
 
+import org.chromium.base.UnguessableToken;
+
 /**
  * The RenderFrameHost Java wrapper to allow communicating with the native RenderFrameHost object.
  *
@@ -15,4 +17,9 @@ public interface RenderFrameHost {
      * @return The last committed URL of the frame.
      */
     String getLastCommittedURL();
+
+    /**
+     * Return the AndroidOverlay routing token for this RenderFrameHost.
+     */
+    UnguessableToken getAndroidOverlayRoutingToken();

[boliu, 2017/03/30 22:42:02]

doesn't need to be in content_public if nothing outside of content needs this

[liberato (no reviews please), 2017/04/04 17:49:28]

good point, done.

 }