Tooltips on Windows high DPI machines need to be displayed using pixel locations. We were passing in logical coordinates which caused the tooltips to be displayed incorrectly when Chrome runs in high dpi mode.

BUG=348242
R=sky@chromium.org, sky

Review URL: https://codereview.chromium.org/184843006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254593 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254593