Opening In-Game Menu

[aila]

So I recently got Dolphin on my Chromebook (since they can run android apps), and everything was fine and dandy until I tried to use my gamepad. Usually, with the dolphin android app, to switch controllers one simply has to swipe down from the top of the screen to access the menu. However, when I do this on my Chromebook, it simply shows the tab with the minimize, back, and close window functions. So, any of you guys know a way around this? Some kind of command to open it, or a setting I'm missing? I've gone through dozens of forums and settings and have come up empty handed.