Correct title bar size for HiDPI Windows

GetSystemMetrics was reporting title bar height in pixels, but we were interpreting them as DIP. This resulted in a double-scaled title bar. 

BUG=149881

Review URL: https://chromiumcodereview.appspot.com/12684006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@188432 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed