Browser goes to the previous page when exiting fullscreen via escape(esc) key of BT keyboard

content/public/android/java/src/org/chromium/content/browser/ContentVideoViewLegacy.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.browser;
 
 import android.content.Context;
 import android.graphics.Color;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
@@ skipping 109 matching lines @@
                     } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP
                             || keyCode == KeyEvent.KEYCODE_MEDIA_PAUSE) {
                         if (isPlaying()) {
                             pause();
                             mMediaController.show();
                         }
                         return true;
                     } else {
                         toggleMediaControlsVisiblity();
                     }
-                } else if (keyCode == KeyEvent.KEYCODE_BACK &&
-                        event.getAction() == KeyEvent.ACTION_UP) {
+                } else if ((keyCode == KeyEvent.KEYCODE_BACK || keyCode == KeyEvent.KEYCODE_ESCAPE)
+                        && event.getAction() == KeyEvent.ACTION_UP) {
                     exitFullscreen(false);
                     return true;
                 } else if (keyCode == KeyEvent.KEYCODE_MENU || keyCode == KeyEvent.KEYCODE_SEARCH) {
                     return true;
                 }
                 return false;
             }
         });
         setOnTouchListener(new OnTouchListener() {
             @Override
@@ skipping 151 matching lines @@
     /**
      * Sets the MediaControlsVisibilityListener that wants to listen to visibility change events.
      *
      * @param listener the listener to send the events to.
      */
     public void setListener(MediaControlsVisibilityListener listener) {
         mListener = listener;
     }
 
 }