Navigation transitions (web to native app): Pass data after starting provisional load (Chrome side)

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

 // Copyright 2014 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.content_public.browser;
 
 /**
  * An interface that allows the embedder to be notified of navigation transition
  * related events and respond to them.
  */
@@ skipping 19 matching lines @@
 
     /**
      * Called when the navigation is deferred immediately after the response
      * started.
      */
     public void addEnteringStylesheetToTransition(String stylesheet);
 
     /**
      * Notifies that a navigation transition is started for a given frame.
      * @param frameId A positive, non-zero integer identifying the navigating frame.
+     * @param cssSelector The CSS selector, which is to be used by Activity Transitions
+     *                    or applied to the transition layer's markup later.
      */
-    public void didStartNavigationTransitionForFrame(long frameId);
+    public void didStartNavigationTransitionForFrame(long frameId, String cssSelector);
+
+    /**
+     * Add transition element's name, position and size.
+     * @param name The name of the transition element.
+     * @param x The x position of the transition element.
+     * @param y The y position of the transition element.
+     * @param width The width of the transition element.
+     * @param height The height of the transition element.
+     */
+    public void addNavigationTransitionElements(String name, int x, int y, int width, int height);
 }