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This constructor takes 28 arguments. It's much clearer to just set the
members as desired.

Do some minor C++11 updates.

Change-Id: I357749f2631b6f6cd6fda2690a870918be769476
Reviewed-on: https://chromium-review.googlesource.com/804807
Commit-Queue: Brett Wilson <brettw@chromium.org>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521725}