UnregisterBackgroundContents  379 chrome/browser/background/background_contents_service.cc       UnregisterBackgroundContents(
UnregisterBackgroundContents  734 chrome/browser/background/background_contents_service.cc     UnregisterBackgroundContents(contents);
UnregisterBackgroundContents  183 chrome/browser/background/background_contents_service.h   void UnregisterBackgroundContents(BackgroundContents* contents);