Don't show media controls when there is a persistent video.

content/public/android/java/src/org/chromium/content_public/browser/WebContents.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;
 
 import android.graphics.Bitmap;
 import android.graphics.Rect;
 import android.os.Handler;
 import android.os.Parcelable;
@@ skipping 354 matching lines @@
     public int downloadImage(String url, boolean isFavicon, int maxBitmapSize,
             boolean bypassCache, ImageDownloadCallback callback);
 
     /**
      * Issues a fake notification about the renderer being killed.
      *
      * @param wasOomProtected True if the renderer was protected from the OS out-of-memory killer
      *                        (e.g. renderer for the currently selected tab)
      */
     public void simulateRendererKilledForTesting(boolean wasOomProtected);
+
+    /**
+     * Notifies the WebContents about the new persistent video status. It should be called whenever
+     * the value changes.
+     *
+     * @param value Whether there is a persistent video associated with this WebContents.
+     */
+    public void setHasPersistentVideo(boolean value);
 }