Fix swapped tile sizes in bench_pictures
Fix swapped tile sizes in bench_pictures

We mixed up X and Y and were rendering vertical tiles.
Over-the-shoulder review by reed@

git-svn-id: 32fc27f4dcfb6c0385cd9719852b95fe6680452d@6352 2bbb7eff-a529-9590-31e7-b0007b416f81

Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot