reimplement generateFontMetrics to keep all calculations in SkScalar, avoiding the
risk of over/under-flow w/ the current fixed-point intermediates.

Review URL: https://codereview.chromium.org/14736005

git-svn-id: http://skia.googlecode.com/svn/trunk@9005 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed