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:
R=bensong@google.com, jcgregorio@google.com

Author: kelvinly@google.com

Review URL: https://codereview.chromium.org/286903025

git-svn-id: http://skia.googlecode.com/svn/trunk@14906 2bbb7eff-a529-9590-31e7-b0007b416f81
10 files changed