am 8cf8f682: Reset the progress when beginning to load a new page.

Merge commit '8cf8f682e90f004d4b8028d2f5b74f72c0cf4e19' into eclair-mr2-plus-aosp

* commit '8cf8f682e90f004d4b8028d2f5b74f72c0cf4e19':
  Reset the progress when beginning to load a new page.