Crostini: Include header file instead of cc file

Instead of a header file, crostini included
chrome/browser/platform/platform_util_chromeos.cc which kind
of worked but in some builds triggered link failures later
because of duplicate symbols.

This probably works sometimes because nobody else uses the symbols
in platform_util_chromeos.o so that it is discarded before the linker
notices the duplication. Not always though.

Bug: 912638
Change-Id: I9b96a41e20ab5362fe800b502d788c844ac4d7f2
Reviewed-on: https://chromium-review.googlesource.com/c/1477025
Auto-Submit: Daniel Bratell <bratell@opera.com>
Commit-Queue: Timothy Loh <timloh@chromium.org>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Reviewed-by: Timothy Loh <timloh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#633471}
1 file changed