[Fetch API] Remove unused code.

[Fetch API] Remove unused code.

The outer FormData in RequestInit::RequestInit is shadowed by the inner
one and completely useless.

The variable was introduced at [1] and the bug was found by brucedawson@.

1: https://codereview.chromium.org/1301523002

BUG=457484
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=200902

[yhirano, 2015-08-20 06:23:23]

yhirano@chromium.org changed reviewers:
+ hiroshige@chromium.org

[hiroshige, 2015-08-20 06:26:24]

lgtm.

optional: Including a link to https://codereview.chromium.org/1301523002 in the
CL description might be better for context.

[yhirano, 2015-08-20 06:35:43]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2015-08-20 06:36:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1293873003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1293873003/1

[yhirano, 2015-08-20 06:36:48]

On 2015/08/20 06:26:24, hiroshige (ooo zombie) wrote:
> lgtm.
> 
> optional: Including a link to https://codereview.chromium.org/1301523002 in
the
> CL description might be better for context.

Done.

[commit-bot: I haz the power, 2015-08-20 07:38:58]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-08-20 07:38:58]

Try jobs failed on following builders:
  android_clang_dbg_recipe on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_clang_d...)

[yhirano, 2015-08-20 07:39:41]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2015-08-20 07:39:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1293873003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1293873003/1

[commit-bot: I haz the power, 2015-08-20 12:28:03]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-08-20 12:28:03]

Try jobs failed on following builders:
  linux_android_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_android_r...)

[yhirano, 2015-08-20 12:28:55]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2015-08-20 12:29:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1293873003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1293873003/1

[commit-bot: I haz the power, 2015-08-20 14:23:07]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=200902