Roll src/third_party/catapult/ 596285fbd..7eb57a183 (1 commit).

https://chromium.googlesource.com/external/github.com/catapult-project/catapult.git/+log/596285fbd59f..7eb57a183493

$ git log 596285fbd..7eb57a183 --date=short --no-merges --format='%ad %ae %s'
2016-09-15 aiolos Add chart-legend-tooltip element.

TBR=catapult-sheriff@chromium.org

Review-Url: https://codereview.chromium.org/2349433003
Cr-Commit-Position: refs/heads/master@{#419053}

DEPS

@@ -92,7 +92,7 @@ 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': '596285fbd59f28cc71549ba6c90f726523a19d98',
+  'catapult_revision': '7eb57a1834937c2af3eb23efab0d8fa4ec987800',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.