[WebBlobRegistry] Use char* than WebThreadSafeData

[WebBlobRegistry] Use char* than WebThreadSafeData

We don't need to wrap the data with WebThreadSafeData here. Just use a
pair of const char* and size_t.

This is Blink side CL.

Chromium side CL: https://codereview.chromium.org/610333002/

R=yhirano,tkent
BUG=417093
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=184141

[tyoshino (SeeGerritForStatus), 2014-09-29 06:19:38]

tyoshino@chromium.org changed reviewers:
+ tkent@chromium.org

[tyoshino (SeeGerritForStatus), 2014-09-29 06:22:09]

tyoshino@chromium.org changed reviewers:
+ yhirano@chromium.org
- tkent@chromium.org

[tyoshino (SeeGerritForStatus), 2014-09-29 06:28:49]

I haven't tested if this resolves bug417093 or not. Even if it doesn't, this
clean up is worth doing I think.

[yhirano, 2014-09-29 08:54:14]

lgtm

[tyoshino (SeeGerritForStatus), 2014-09-29 08:55:30]

tyoshino@chromium.org changed reviewers:
+ tkent@chromium.org

[tyoshino (SeeGerritForStatus), 2014-09-29 08:55:36]

+tkent

[tyoshino (SeeGerritForStatus), 2014-09-29 08:56:13]

This CL depends on Chromium side CL: https://codereview.chromium.org/610333002/

[tkent, 2014-09-30 01:26:31]

lgtm

[tyoshino (SeeGerritForStatus), 2014-10-22 03:24:29]

The CQ bit was checked by tyoshino@chromium.org

[tyoshino (SeeGerritForStatus), 2014-10-22 03:24:37]

The CQ bit was unchecked by tyoshino@chromium.org

[tyoshino (SeeGerritForStatus), 2014-10-22 03:24:58]

The CQ bit was checked by tyoshino@chromium.org

[commit-bot: I haz the power, 2014-10-22 03:25:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/611923002/20001

[commit-bot: I haz the power, 2014-10-22 04:25:17]

Committed patchset #2 (id:20001) as 184141