Roll src/third_party/catapult 1331d4b..72a8685 (4 commits)

https://chromium.googlesource.com/catapult.git/+log/1331d4b..72a8685


git log 1331d4b..72a8685 --date=short --no-merges --format='%ad %ae %s'
2018-06-07 simonhatch@chromium.org Dashboard - Remove some unused indexes from TestMetadata.
2018-06-07 simonhatch@chromium.org Dashboard - Skip empty last_ran_timestamps
2018-06-07 simonhatch@chromium.org HistogramSet - Merge TagMap diagnostics in add_reserved_diagnostics
2018-06-07 simonhatch@chromium.org Dashboard - Removed unused global from pinpoint_request.py


Created with:
  gclient setdep -r src/third_party/catapult@72a8685

The AutoRoll server is located here: https://catapult-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

CQ_INCLUDE_TRYBOTS=luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel

BUG=chromium:849752
TBR=sullivan@chromium.org

Change-Id: I34997ad164552bf636bd13c5dce8f68fd2f47c16
Reviewed-on: https://chromium-review.googlesource.com/1091173Reviewed-by: catapult-chromium-autoroll <catapult-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: catapult-chromium-autoroll <catapult-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#565382}

DEPS

@@ -162,7 +162,7 @@ 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': '1331d4bf99c35d1284d2e30e0db25f9153bd6c5d',
+  'catapult_revision': '72a86850c69cd724021dff483d6c2011d59a6511',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.