Port 699a91f2

Original Commit Message:

    This class can contain members and functions common across all
    platforms.

R=jgruber@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: Id085de265e915d0cc3d7851153df53529545743b
Reviewed-on: https://chromium-review.googlesource.com/1095735Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#53650}