Allows to fire VKEY_UNKNOWN key events.

Allows to fire VKEY_UNKNOWN key events.

On Linux, we have keys with keycode=VKEY_UNKNOWN, for example, ISO_LEVEL3_LATCH key.  We have to emit keydown/up events appropriately even if keycode=VKEY_UNKNOWN.

Just FYI: Firefox also fires keyevents with keycode=0, so the behavior will be compatible.  Compared to IE and Chrome on Windows, it's still compatible because there is no such key as ISO_LEVEL3_LATCH, etc. on Windows.

BUG=402320
TEST=Done manually.

Committed: https://crrev.com/6c879fbd35d14af9ca4fe53bc622edac2d3fd5f1
Cr-Commit-Position: refs/heads/master@{#300438}

[Yuki, 2014-10-20 07:03:23]

yukishiino@chromium.org changed reviewers:
+ sky@chromium.org

[Yuki, 2014-10-20 07:03:23]

Scott, could you review this CL as an owner of ui/aura/ ?

[Yuki, 2014-10-20 14:04:32]

Patchset #2 (id:20001) has been deleted

[sky, 2014-10-20 19:45:21]

LGTM

[Yuki, 2014-10-21 08:31:16]

The CQ bit was checked by yukishiino@chromium.org

[commit-bot: I haz the power, 2014-10-21 08:32:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/665863002/40001

[commit-bot: I haz the power, 2014-10-21 09:29:30]

Committed patchset #2 (id:40001)

[commit-bot: I haz the power, 2014-10-21 09:31:54]

Patchset 2 (id:??) landed as
https://crrev.com/6c879fbd35d14af9ca4fe53bc622edac2d3fd5f1
Cr-Commit-Position: refs/heads/master@{#300438}