Disable calls to SetProcessDPIAware under Win8.1 (Rebase)

Was previously LGTM'ed as https://codereview.chromium.org/137483002/
BUG=160457, 329143
TBR=ben@chromium.org

Review URL: https://codereview.chromium.org/138443006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246441 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246441