[Android] Fix the issue about status bar was not shown.

This patch is to fix the issue about status bar was not shown when exit
the fullscreen mode.
Add flag to avoid the second setting from video view.

BUG=XWALK-3023
Merge pull request #2732 from wuhengzhi/xwalk_3023_status_bar

[Android] Fix the issue about status bar was not shown.