Openparams FitH and FitV in PDF viewer accept optional position.

Newly accepted values:
- view=FitH,[y]
- view=FitV,[x]

Bug: 64309
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I462365a12885d479b8255c6805ef9c568c0ec348
Reviewed-on: https://chromium-review.googlesource.com/782660
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519002}
3 files changed