Roll src/third_party/catapult/ 7863f77ca..64cff499a (1 commit).

https://chromium.googlesource.com/external/github.com/catapult-project/catapult.git/+log/7863f77ca84e..64cff499aefc

$ git log 7863f77ca..64cff499a --date=short --no-merges --format='%ad %ae %s'
2017-01-11 simonhatch Dashboard - Fix incorrect default metric on group_report.

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

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls

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

Review-Url: https://codereview.chromium.org/2628073002
Cr-Commit-Position: refs/heads/master@{#443031}

DEPS

@@ -96,7 +96,7 @@ 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': '7863f77ca84edad4dc03fcb17c790e3c549c9f8e',
+  'catapult_revision': '64cff499aefc88a7aacea3ede74c4cb09724d303',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.