GitLab

Adding a new attribute to the TextMetrics object to expose glyph
advances for a given text. This will be a list of pixel widths for each
glyph in the text measured in pixels from the text alignment origin in
the text direction (rtl or ltr).

Added some basic test and commented some edge cases that we still
need to resolve.

Bug: 853376, 277215
Change-Id: I7df30ce493c843032d974ca79ca793c89b318d82
Reviewed-on: https://chromium-review.googlesource.com/1134202Reviewed-by: Justin Novosad <junov@chromium.org>
Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Commit-Queue: David Quiroz Marin <davidqu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575470}