Before, the bitmaps were created and then passed to the benchmark. However, some benchmarks in the future will not require bitmaps. This will remove the necessity of passing around an extraneous bitmap to those tests.
Review URL: https://codereview.appspot.com/6356081
git-svn-id: http://skia.googlecode.com/svn/trunk@4519 2bbb7eff-a529-9590-31e7-b0007b416f81
Changed the render_pictures, bench_pictures and test_pictures.py so that multiple inputs can be given. Furthermore, specific files can also be specified.
Unit tests have also been added for picture_utils.cpp.
Review URL: https://codereview.appspot.com/6345054
git-svn-id: http://skia.googlecode.com/svn/trunk@4486 2bbb7eff-a529-9590-31e7-b0007b416f81
