Don't clear its content if the previous url is same as the new url. Don't call OnAmbientPropertyChange if mode is not changed.
Don't clear its content if the previous url is same as the new url.
Don't call OnAmbientPropertyChange if mode is not changed.


git-svn-id: 12ae5aeef08fd453d75833463da4cc20df82a94e@1306 8af8166b-12a6-a448-a533-9086ace3f9f6

snakamura/q3,snakamura/q3,snakamura/q3,snakamura/q3,snakamura/q3,snakamura/q3,snakamura/q3,snakamura/q3,snakamura/q3