Implementing openparam view= in PDF viewer.

The values that are now accepted are:
- view=Fit
- view=FitH
- view=FitV

Bug: 64309
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I1072e3dc895e4c21cd9823adac13a8c3cf5dcd90
Reviewed-on: https://chromium-review.googlesource.com/775153
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#518441}
11 files changed