customtabs: Extract a redirect endpoint, and maybe connect to it.

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

 // 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.chrome.browser.customtabs;
 
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
@@ skipping 475 matching lines @@
     /**
      * Get the speculation mode to be used by default for the given session.
      * If no value has been set will default to PRERENDER mode.
      */
     public synchronized int getSpeculationModeForSession(CustomTabsSessionToken session) {
         SessionParams params = mSessionParams.get(session);
         return params == null ? CustomTabsConnection.SpeculationParams.PRERENDER
                               : params.mSpeculationMode;
     }
 
+    /**
+     * Returns whether an origin is first-party with respect to a session, that is if the
+     * application linked to the session has a relation with the provided origin. This does not
+     * calls OriginVerifier, but only checks the cached relations.
+     *
+     * @param session The session.
+     * @param origin Origin to verify
+     */
+    public synchronized boolean isFirstPartyOriginForSession(
+            CustomTabsSessionToken session, Uri origin) {
+        SessionParams params = mSessionParams.get(session);
+        return params == null ? false : OriginVerifier.isValidOrigin(params.packageName, origin);
+    }
+
     /** Tries to bind to a client to keep it alive, and returns true for success. */
     public synchronized boolean keepAliveForSession(CustomTabsSessionToken session, Intent intent) {
         // When an application is bound to a service, its priority is raised to
         // be at least equal to the application's one. This binds to a dummy
         // service (no calls to this service are made).
         if (intent == null || intent.getComponent() == null) return false;
         SessionParams params = mSessionParams.get(session);
         if (params == null) return false;
 
         KeepAliveServiceConnection connection = params.getKeepAliveConnection();
@@ skipping 58 matching lines @@
         SessionParams params = mSessionParams.get(session);
         if (params == null) return;
         mSessionParams.remove(session);
         if (params.postMessageHandler != null) {
             params.postMessageHandler.cleanup(mContext);
         }
         if (params.disconnectCallback != null) params.disconnectCallback.run(session);
         mUidHasCalledWarmup.delete(params.uid);
     }
 }