Makes WindowState::Restore() a no-op for windows with SHOW_TYPE_DEFAULT and SHOW_TYPE_NORMAL.

This makes the behavior of WindowState::Restore() less confusing. Previously, WindowState::Restore()
- set the window's bounds to the restore bounds for SHOW_TYPE_DEFAULT
- did nothing for SHOW_TYPE_NORMAL

Review URL: https://codereview.chromium.org/148983004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250613 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250613