Fix
5158515 [UI] Slideshow action in portrait Photo/Video and Video playback views should be in the overflow/menu
Change-Id: If3171b9db1ad2f9f238f1fd5625ac9a1ed7d5ef0
Initial code for Gallery2.
fix:
5176434
Change-Id: I041e282b9c7b34ceb1db8b033be2b853bb3a992c