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This CL adds supports for navigating to view destinations with fit type
'XYZ' (See table 151 in ISO 32000-1 standard for more details about
syntax of "XYZ"), which specifies the coordinates of the page's origin
inside the view window and the zoom factor of the page.

Bug: 55776,748852
Change-Id: I4f449f006ec9dda4be282aea75c2a6e36a35b87e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2390997Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Commit-Queue: Hui Yingst <nigi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#810919}