Linux: remember user's last selected path for select file dialogs.
Linux: remember user's last selected path for select file dialogs.

Note that paths are remembered separately for save and open. This is *not* the same behavior as windows chrome/linux firefox, which remember the same path for both save and open. My justification is the following scenario:

1. User presses ctrl-o, and selects a file from the desktop.
2. One hour later, user presses ctrl-s to save a webpage.
3. User expects to be saving to his default download dir, but instead gets the desktop.
4. Huh?

Review URL: http://codereview.chromium.org/115007

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@15430 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser