The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b1221f6b6b59f582f07f7042bd3780e6b375c733

commit b1221f6b6b59f582f07f7042bd3780e6b375c733
Author: drott <drott@chromium.org>
Date: Fri Oct 14 18:30:30 2016

Add ability to compute text intercepts to Font

For text-decoration-skip: ink we need to have access to text intercepts,
i.e. figuring out where the line decoration intersects with the glyph
shapes. Skia offers this functionality and we need to integrate it with
our text and graphics code.

BUG= 655166 

Review-Url: https://codereview.chromium.org/2416603002
Cr-Commit-Position: refs/heads/master@{#425394}

[modify] https://crrev.com/b1221f6b6b59f582f07f7042bd3780e6b375c733/third_party/WebKit/Source/platform/BUILD.gn
[modify] https://crrev.com/b1221f6b6b59f582f07f7042bd3780e6b375c733/third_party/WebKit/Source/platform/fonts/Font.cpp
[modify] https://crrev.com/b1221f6b6b59f582f07f7042bd3780e6b375c733/third_party/WebKit/Source/platform/fonts/Font.h
[add] https://crrev.com/b1221f6b6b59f582f07f7042bd3780e6b375c733/third_party/WebKit/Source/platform/fonts/FontTest.cpp