Roll Perfetto from a5e8178b385e to 2b8d80936336 (2 revisions)

https://android.googlesource.com/platform/external/perfetto.git/+log/a5e8178b385e..2b8d80936336

2020-07-02 nuskos@google.com Add the descendant_slice table.
2020-07-02 nuskos@google.com Add the ancestor_slice dynamic table.

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/perfetto-chromium-autoroll
Please CC perfetto-bugs@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

Cq-Include-Trybots: luci.chromium.try:linux-perfetto-rel
Bug: chromium:160148605
Tbr: perfetto-bugs@google.com
Change-Id: I0afdf60523522ca11a03e8fdecd2f6286e847fa3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2278298Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#784835}

DEPS

@@ -1225,7 +1225,7 @@ deps = {
   },
 
   'src/third_party/perfetto':
-    Var('android_git') + '/platform/external/perfetto.git' + '@' + 'a5e8178b385ebfacffd08101529a54f957e78b8f',
+    Var('android_git') + '/platform/external/perfetto.git' + '@' + '2b8d809363367b90c0560b53cf18830ff3c9f202',
 
   'src/third_party/perl': {
       'url': Var('chromium_git') + '/chromium/deps/perl.git' + '@' + '6f3e5028eb65d0b4c5fdd792106ac4c84eee1eb3',