Revert of Delay font cache building by few seconds to yield for startup resource contention.

Revert of Delay font cache building by few seconds to yield for startup resource contention. (patchset #3 id:40001 of https://codereview.chromium.org/992413003/)

Reason for revert:
Suspected to be causing failures on Intel Release GPU bot.

See crbug.com/467706

Original issue's description:
> Delay font cache building by few seconds to yield for startup resource contention.
>
> During first renderer start there are lot of things happening simultaneously some of them are:
> 1. Renderer is going through all font files on the system to create a font collection.
> 2. Renderer loading up startup URL, accessing HTML/JS File cache, net activity etc.
> 3. Extension initialization.
>
> We delay building of this cache mainly to avoid parallel font file loading along with Renderer. Some systems have significant number of font files which takes long time process.
>
> BUG=458751, 436195
> R=cpu,scottmg
>
> Committed: https://crrev.com/787e29c61825173adaf3414ff8e3d3c0c26f529b
> Cr-Commit-Position: refs/heads/master@{#320226}

TBR=cpu@chromium.org,scottmg@chromium.org,gab@chromium.org,shrikant@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=458751, 436195
Committed: https://crrev.com/853deaf9674b69c01794888e53a50571c62833ef
Cr-Commit-Position: refs/heads/master@{#320811}

[Vangelis Kokkevis, 2015-03-16 22:46:40]

Created Revert of Delay font cache building by few seconds to yield for startup
resource contention.

[commit-bot: I haz the power, 2015-03-16 22:46:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1009403004/1

[commit-bot: I haz the power, 2015-03-16 22:47:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-16 22:48:19]

Patchset 1 (id:??) landed as
https://crrev.com/853deaf9674b69c01794888e53a50571c62833ef
Cr-Commit-Position: refs/heads/master@{#320811}