OOP PDF - Add support for "page" open pdf parameter

This patch adds support for "page" feature of open PDF
parameters in OOP PDF.

When page is used as an open PDF parameter, then PDF
should initially be loaded at the page specified by user.

BUG=64309

Review URL: https://codereview.chromium.org/476733003

Cr-Commit-Position: refs/heads/master@{#290529}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@290529 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed