Roll src/third_party/catapult/ 1556ddcf2..a64c010c7 (2 commits)

https://chromium.googlesource.com/external/github.com/catapult-project/catapult.git/+log/1556ddcf20a1..a64c010c74cc

$ git log 1556ddcf2..a64c010c7 --date=short --no-merges --format='%ad %ae %s'
2017-06-20 benjhayden Categorize diagnostics in how-to-write-metrics.md.
2017-06-20 erikchen Move symbolize_trace from tracing/bin to tracing/tracing/extras/symbolizer.

Created with:
  roll-dep src/third_party/catapult
BUG=734852


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=sullivan@chromium.org

Change-Id: Iaffc9cdd2e7aa37a482dce08c4bde5dd233dfad1
Reviewed-on: https://chromium-review.googlesource.com/541922
Reviewed-by: <catapult-deps-roller@chromium.org>
Commit-Queue: <catapult-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481065}

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': '1556ddcf20a16bdd8f54d7a9bd43df8dc5b4a53d',
+  'catapult_revision': 'a64c010c74cc810921c037fcf7ccee1d5c5b0c00',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.