Revert of PictureBenchmark JSON logging

Revert of PictureBenchmark JSON logging (https://codereview.chromium.org/286903025/)

Reason for revert:
Broke some Windows builds; see http://skbug.com/2609 ('certain Windows Build-* bots failing since r14905').

Before re-landing with a fix, please send to some of the trybots that failed the first time.

Original issue's description:
> Add JSON logging support to bench_pictures by adding a PictureResultsWriter class (in tools/PictureResultsWriter.h) to process logging information, using a very similar style as bench/ResultsWriter.h
> 
> JSON format described in code, above PictureJSONResultsWriter class
> 
> BUG=skia:
> 
> Committed: http://code.google.com/p/skia/source/detail?r=14906

TBR=bensong@google.com,jcgregorio@google.com,kelvinly@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:2609
Committed: http://code.google.com/p/skia/source/detail?r=14910

[epoger, 2014-05-27 21:50:56]

Created Revert of PictureBenchmark JSON logging

[epoger, 2014-05-27 21:51:10]

The CQ bit was checked by epoger@google.com

[commit-bot: I haz the power, 2014-05-27 21:51:29]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/epoger@google.com/306483010/1

[commit-bot: I haz the power, 2014-05-27 21:51:45]

Change committed as 14910