Added generic method for setting properties only when webview is loaded
Added generic method for setting properties only when webview is loaded

Signed-off-by: Peter Nelson <4b8373d016f277527198385ba72fda0feb5da015@peterdn.com>

amoikevin/webkitdotnet,amoikevin/webkitdotnet,amoikevin/webkitdotnet,VikingsYip/webkitdotnet,VikingsYip/webkitdotnet,webkitdotnet/webkitdotnet,VikingsYip/webkitdotnet,VikingsYip/webkitdotnet,amoikevin/webkitdotnet,VikingsYip/webkitdotnet,webkitdotnet/webkitdotnet,webkitdotnet/webkitdotnet,webkitdotnet/webkitdotnet,amoikevin/webkitdotnet