Print Preview: Do not send network request on Print Preview startup

https://crrev.com/c/1607133 removed prefetching for recent destinations,
but Print Preview still tries to prefetch the Google Drive destination
from the cloud print server. This results in always sending a network
request whenever Print Preview is opened, unless cloud print is
disabled.

The reason for prefetching Google Drive is that this destination should
be displayed in the dropdown only for signed in users, and Print Preview
relied on the cloud print server as the source of truth for user sign in
state.

This CL uses the signin state sent in the initial settings to set the
cloudPrintState and user information in Print Preview, and determine
whether to display the Google Drive destination in the dropdown. It
also changes the destination settings to fetch the Drive destination
from the GCP server only when it is selected by the user, to match the
behavior used for other recent destinations.

Bug: 964144
Change-Id: Ie42176a6b63ac0181acf1e970e6c589f3a5332ab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1613562
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#661561}