Revert of Unflake V8 sampling profiler tests.

Revert of Unflake V8 sampling profiler tests. (patchset #1 id:1 of https://codereview.chromium.org/1032633002/)

Reason for revert:
Broke compilation on Mac Builder:
https://build.chromium.org/p/chromium.mac/builders/Mac%20Builder/builds/19512/steps/compile/logs/stdio

when compiling content/renderer/devtools/v8_sampling_profiler_browsertest.cc

Original issue's description:
> Unflake V8 sampling profiler tests.
>
> BUG=406277
>
> Committed: https://crrev.com/d6493ce2a4ed6f346a31597ac27748a3429a1d95
> Cr-Commit-Position: refs/heads/master@{#321970}

TBR=yurys@chromium.org,alph@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=406277
Committed: https://crrev.com/3703085199a63732add21d955c6280765e3c480e
Cr-Commit-Position: refs/heads/master@{#321975}

[pneubeck (no reviews), 2015-03-24 11:51:13]

Created Revert of Unflake V8 sampling profiler tests.

[commit-bot: I haz the power, 2015-03-24 11:51:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1017183004/1

[commit-bot: I haz the power, 2015-03-24 11:51:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-24 11:52:23]

Patchset 1 (id:??) landed as
https://crrev.com/3703085199a63732add21d955c6280765e3c480e
Cr-Commit-Position: refs/heads/master@{#321975}

[alph, 2015-03-24 12:14:48]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1029353002/ by alph@chromium.org.

The reason for reverting is: Suspecting goma flake. Relanding..