Fix a crash which occurs while translating the windows message WM_DEADCHAR to our events format.

Fix a crash which occurs while translating the windows message WM_DEADCHAR to our events format.

The crash occurs because the EventTypeFromNative helper function on windows does not handle this
message and returns ET_UNKNOWN as the type leading to a CHECK later on. The WM_DEADCHAR message
is posted while translating certain character sequences in the context of WM_KEYUP.

Fix is to return the type for WM_DEADCHAR as ET_KEY_RELEASED.

BUG=411811
Committed: https://crrev.com/79359cecd0ce534e356e3380a4d7e4dc4a29e07b
Cr-Commit-Position: refs/heads/master@{#293859}

[ananta, 2014-09-08 19:12:30]

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

[sky, 2014-09-08 20:37:41]

LGTM

[ananta, 2014-09-08 22:14:42]

The CQ bit was checked by ananta@chromium.org

[commit-bot: I haz the power, 2014-09-08 22:31:47]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ananta@chromium.org/551863003/1

[ananta, 2014-09-09 02:59:51]

The CQ bit was unchecked by ananta@chromium.org

[ananta, 2014-09-09 02:59:56]

The CQ bit was checked by ananta@chromium.org

[commit-bot: I haz the power, 2014-09-09 03:06:22]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ananta@chromium.org/551863003/1

[commit-bot: I haz the power, 2014-09-09 05:46:33]

Committed patchset #1 (id:1) as fee7be74b893ce264bec57a1493f08e6c23ff3a6

[commit-bot: I haz the power, 2014-09-10 03:50:42]

Patchset 1 (id:??) landed as
https://crrev.com/79359cecd0ce534e356e3380a4d7e4dc4a29e07b
Cr-Commit-Position: refs/heads/master@{#293859}