GitLab

r572930 moved FontConfig out of process access from a global file
descriptor to Mojo messages. In one instance, PepperFlashFontFileHost,
an IPC performing FontConfig method was replaced with one that tries to
access FontConfig inside the sandboxed process, which fails. The
mimehandler process needs access to FontConfig as well for providing
fonts matching to PDFium.

This CL fixes mimehandler out of process font access and moves back to
using the MatchFontWithFallback FontConfig logic which was previously
used in this file, before it was moved to using Skia font matching like
on Windows. This implies that on Linux additional font fallback logic is
used again, which finds replacements for non-existing fonts such as
SimSun.

Bug: 862051
Change-Id: I67136d51b45f72db0ae74201353369e34885f2ef
Reviewed-on: https://chromium-review.googlesource.com/1131938
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574119}