Create the D3D device with a NULL HWND instead of GetShellWindow in the decoder

Create the D3D device with a NULL HWND instead of GetShellWindow in the decoder

This works correctly on Windows 7 and 8 and the reason for doing this is to see if this is causing
crashes in device creation in certain configurations in the wild.

BUG=551068
Committed: https://crrev.com/0b0477349b8cdd69e968358e99180be9ad03d956
Cr-Commit-Position: refs/heads/master@{#358370}

[ananta, 2015-11-06 02:05:07]

ananta@chromium.org changed reviewers:
+ dalecurtis@chromium.org, jbauman@chromium.org

[jbauman, 2015-11-06 02:06:08]

lgtm

[DaleCurtis, 2015-11-06 18:18:24]

lgtm

[ananta, 2015-11-06 18:51:24]

The CQ bit was checked by ananta@chromium.org

[commit-bot: I haz the power, 2015-11-06 18:52:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1421553014/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1421553014/20001

[commit-bot: I haz the power, 2015-11-06 19:07:51]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-11-06 19:09:36]

Patchset 2 (id:??) landed as
https://crrev.com/0b0477349b8cdd69e968358e99180be9ad03d956
Cr-Commit-Position: refs/heads/master@{#358370}