WallpaperPrivateSetWallpaperIfExistsFunction 283 chrome/browser/chromeos/extensions/wallpaper_private_api.cc WallpaperPrivateSetWallpaperIfExistsFunction() {} WallpaperPrivateSetWallpaperIfExistsFunction 286 chrome/browser/chromeos/extensions/wallpaper_private_api.cc ~WallpaperPrivateSetWallpaperIfExistsFunction() {}