Revert of Add GN For hpack fuzzing utilities and net_perftests.

Revert of Add GN For hpack fuzzing utilities and net_perftests. (patchset #5 id:80001 of https://codereview.chromium.org/936313002/)

Reason for revert:
This causes a compile failure on the Windows 8 GN builder

http://build.chromium.org/p/chromium.win/builders/Win8%20GN%20%28dbg%29/builds/4271

Original issue's description:
> Add GN For hpack fuzzing utilities and net_perftests.
>
> This also adapts net GN targets to use the new size_t->int warning suppression config in //build/config/compiler instead of a locally defined config.
>
> BUG=
>
> Committed: https://crrev.com/707a56a6f0e56138fcef5db3ba7ace1ac3cb83eb
> Cr-Commit-Position: refs/heads/master@{#320187}

TBR=mmenke@chromium.org,dpranke@chromium.org,brettw@chromium.org,rockot@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/a588ba9a09a8149236551231beed523800382901
Cr-Commit-Position: refs/heads/master@{#320206}

[ananta, 2015-03-12 02:11:54]

Created Revert of Add GN For hpack fuzzing utilities and net_perftests.

[commit-bot: I haz the power, 2015-03-12 02:12:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1000833002/1

[commit-bot: I haz the power, 2015-03-12 02:13:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-12 02:14:14]

Patchset 1 (id:??) landed as
https://crrev.com/a588ba9a09a8149236551231beed523800382901
Cr-Commit-Position: refs/heads/master@{#320206}