Add Digital Asset Links verification for postMessage API

chrome/android/java/src/org/chromium/chrome/browser/customtabs/ClientManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/customtabs/ClientManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/ClientManager.java b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/ClientManager.java
index 86c7219a3508ac89ba69fac1d4d3714875467eaf..5f8860d669c18c6d731b9b3f4426ea502401755c 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/ClientManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/ClientManager.java
@@ -341,6 +341,26 @@ class ClientManager {
     }
 
     /**
+     * See {@link PostMessageHandler#verifyAndInitializeWithOrigin(String, Uri)}.
+     */
+    public synchronized void verifyAndInitializeWithPostMessageOriginForSession(
+            CustomTabsSessionToken session, Uri origin) {
+        SessionParams params = mSessionParams.get(session);
+        if (params == null) return;
+        params.postMessageHandler.verifyAndInitializeWithOrigin(params.packageName, origin);
+    }
+
+    /**
+     * @return The postMessage origin for the given session.
+     */
+    @VisibleForTesting
+    synchronized Uri getPostMessageOriginForSessionForTesting(CustomTabsSessionToken session) {
+        SessionParams params = mSessionParams.get(session);
+        if (params == null) return null;
+        return params.postMessageHandler.getOriginForTesting();
+    }
+
+    /**
      * See {@link PostMessageHandler#reset(WebContents)}.
      */
     public synchronized void resetPostMessageHandlerForSession(