Change byte code in GoogleAdMobAdsSdk-6.2.1.jar to allow rendering to a canvas

I'd like to use AdMob in a widget to allow for a "lite" version of my widgets but currently the AdMob library blocks this. I've already done a bit of exploration and there seem to be three places in the code checking if the ad is displayed in an activity that is visible. Because I want to render the ad to a canvas I need to work around these. The task is basically to change the byte code of the "[login to view URL]$[login to view URL]" class and change the isShown() method to always return true; and to change any other parts of the code to get that ad to render to a canvas. I've attached a sample project that shows what I'm trying to do and has some initial work to get the ad to display.