Roll src/third_party/catapult/ 6c8709c0c..b9d66e1fc (1 commit).

https://chromium.googlesource.com/external/github.com/catapult-project/catapult.git/+log/6c8709c0cc9d..b9d66e1fc00f

$ git log 6c8709c0c..b9d66e1fc --date=short --no-merges --format='%ad %ae %s'
2016-09-27 petrcermak [tracing] Overhaul tr-ui-b-table focus handling

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel
TBR=catapult-sheriff@chromium.org

Review-Url: https://codereview.chromium.org/2372113003
Cr-Commit-Position: refs/heads/master@{#421211}

DEPS

@@ -95,7 +95,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.
-  'catapult_revision': '6c8709c0cc9df527cc7f9bdee99f9152fa820df7',
+  'catapult_revision': 'b9d66e1fc00f1b5412abc96fdf38f75552e489f2',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.