Remove ui::KeyEvent::platform_keycode_

This field had been added as a temporary measure to support
X11 Keysym-based character composition under Ozone. Since
crrev.com/ed31ed it is no longer necessary.

BUG=442757

Review URL: https://codereview.chromium.org/1312833006

Cr-Commit-Position: refs/heads/master@{#349195}


CrOS-Libchrome-Original-Commit: cf78ded8ae7f64968789c3bac48ea6e69df08d29
1 file changed
tree: 48ac2c1c2ac43ddebc5754b2ed67b123c81d3caa
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/