Fix ctrl+space on file list

CL: 1454209 introduced the ability to select multiple files with Ctrl +
Arrow keys and Space. However the Ctrl+Space keyboard event reports
|key| attribute as "Unidentified" in production instead of " " as it
reports in linux-chromeos build.

This CL changes the event handler to use e.code == 'Space' instead to
fix the keyboard shortcut in production.

Change-Id: I4dac2fdbe3270f4bcb85d7d0943ac0b6b39da239
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1527901
Commit-Queue: Noel Gordon <noel@chromium.org>
Auto-Submit: Luciano Pacheco <lucmult@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#641511}
2 files changed