Revert 201204 "add more string -> unsigned number conversion uni..."

Revert 201204 "add more string -> unsigned number conversion uni..."

This change generates "integer constant is too large for 'unsigned long' type" compile error on "Google Chrome Linux" buildbot

> add more string -> unsigned number conversion unit tests
> 
> Add unit tests for the following functions in base:
> 	StringToUint
> 	StringToUint64
> 	StringToSizeT
> 
> Review URL: https://chromiumcodereview.appspot.com/14794002

TBR=mostynb@opera.com

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=201237

[hashimoto, 2013-05-21 05:35:40]

Committed patchset #1 manually as r201237.

[hashimoto, 2013-05-21 05:36:55]

On 2013/05/21 05:35:40, hashimoto wrote:
> Committed patchset #1 manually as r201237.

Please see
http://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Linux/...
for logs.

[hashimoto, 2013-05-21 05:37:45]

On 2013/05/21 05:36:55, hashimoto wrote:
> On 2013/05/21 05:35:40, hashimoto wrote:
> > Committed patchset #1 manually as r201237.
> 
> Please see
>
http://build.chromium.org/p/chromium.chrome/builders/Google%2520Chrome%2520Li...
> for logs.

Spaces got escaped... please see http://goo.gl/S3Ne3

[Mostyn Bramley-Moore, 2013-05-21 06:02:14]

Resubmitted with proposed fix here:
https://codereview.chromium.org/15521004/