add std::sort() to SortBench

Smaller is better, winner of each group marked with *:

   *  0.81  	sort_stdsort_repeated
      2.60  	sort_qsort_repeated
     11.06  	sort_skheap_repeated
     15.81  	sort_skqsort_repeated

   *  1.76  	sort_stdsort_backward
     23.17  	sort_qsort_backward
     14.32  	sort_skheap_backward
      7.06  	sort_skqsort_backward

   *  0.78  	sort_stdsort_forward
      4.00  	sort_qsort_forward
     15.19  	sort_skheap_forward
      2.76  	sort_skqsort_forward

     13.47  	sort_stdsort_rand10
     27.71  	sort_qsort_rand10
     15.80  	sort_skheap_rand10
   * 11.11  	sort_skqsort_rand10

     17.94  	sort_stdsort_rand
     48.69  	sort_qsort_rand
     16.52  	sort_skheap_rand
   * 11.98  	sort_skqsort_rand

libc++ must special case repeated, forward, and backward sorted data?

To reproduce, run this and ignore (unrelated) sort_topo_rand:

    $ ninja -C out nanobench; and out/nanobench -m sort_ -q

Change-Id: I3724188f2a6acac61d9e8c2bd43443792e0ae0ce
Reviewed-on: https://skia-review.googlesource.com/131156
Commit-Queue: Mike Klein <mtklein@chromium.org>
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Mike Klein <mtklein@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>

0 files changed, 0 insertions, 0 deletions