Download an initial set of third_party fonts from cloud storage

This should help to run layout tests on a more diverse set of Linux
distributions and avoid running into differences in font target file
name differences for common font packages.

We should move as much as possible of the test fonts for layout tests
from distribution packages to our own mechanism.

Modeled after a previously used approach for blimp fonts, compare

Bug: 772116
Change-Id: Ia1929d3d22a047d540f841741f5e9a369142e1b6
Commit-Queue: Dominik Röttsches <>
Reviewed-by: Peter Beverloo <>
Reviewed-by: Robert Sesek <>
Reviewed-by: Justin Schuh <>
Reviewed-by: Mike West <>
Reviewed-by: Dirk Pranke <>
Reviewed-by: Dan Erat <>
Cr-Commit-Position: refs/heads/master@{#517350}
32 files changed