The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d671a25e63f03dd6389fae56d8e575820bda47b6

commit d671a25e63f03dd6389fae56d8e575820bda47b6
Author: afakhry <afakhry@chromium.org>
Date: Thu Jan 05 18:54:20 2017

Adding ChromeOS firmware version to feedback reports

Adding it such that it shows up in the product-specific data.

BUG= 676017 
TEST=Start the feedback app, open the system information link, an entry named
CHROMEOS_FIRMWARE_VERSION should be present with a valid value matching that in
/var/log/bios_info.txt.

Review-Url: https://codereview.chromium.org/2615603003
Cr-Commit-Position: refs/heads/master@{#441718}

[modify] https://crrev.com/d671a25e63f03dd6389fae56d8e575820bda47b6/chrome/browser/feedback/system_logs/log_sources/chrome_internal_log_source.cc