Roll src/third_party/catapult/ e490e96cd..21ff400bb (3 commits)

https://chromium.googlesource.com/catapult.git/+log/e490e96cd7f3..21ff400bb488

$ git log e490e96cd..21ff400bb --date=short --no-merges --format='%ad %ae %s'
2018-03-01 kylechar Update VizCompositorThread name.
2018-03-09 dtu [pinpoint] Show error messages in new job dialogs.
2018-03-08 simonhatch Pinpoint - Have results2 generated on the backend.

Created with:
  roll-dep src/third_party/catapult


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.


TBR=sullivan@chromium.org

Change-Id: Ie65ff18fdf995ae00103a3d750d666312d7389eb
Reviewed-on: https://chromium-review.googlesource.com/957467
Commit-Queue: catapult-chromium-autoroll <catapult-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: catapult-chromium-autoroll <catapult-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#542268}

DEPS

@@ -135,7 +135,7 @@ 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': 'e490e96cd7f3c0cc32ecbb6faf25a88b3ca64ec4',
+  'catapult_revision': '21ff400bb4884e9a601168e7fa08559a76e06a75',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.