[input] Fix ChromeOS IME to report 'Process' as DOM |key| value.

When a key is processed by the IME the content was being passed an event
with |keyCode| set to VKEY_PROCESSKEY, but the |key| field still set to
a normal character DOM key value. Fix the |key| value to be "Process" in
this case.

Bug: 644140
Change-Id: I20d38a052876e38d562e4f4aaf1bcce61b9ed41d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1715558
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Reviewed-by: Shu Chen <shuchen@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Auto-Submit: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#681619}
2 files changed