PlatformFontWin::DeriveFontWithHeight insensitive to base font's height

As a side effect this commit fixes also bug 149151 and allows https://codereview.chromium.org/230793003/ patch to be applied without breaking tests.

BUG=367092

Review URL: https://codereview.chromium.org/251773002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@279657 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed