Roll Perfetto from 509812647060 to db0d1b0d2459 (2 revisions)

https://android.googlesource.com/platform/external/perfetto.git/+log/509812647060..db0d1b0d2459

2020-07-07 fmayer@google.com Merge "Check for valid slice in UpdateThreadDeltasForSliceId."
2020-07-07 fmayer@google.com Disable PollBehavesProperly.

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:158484911
Tbr: perfetto-bugs@google.com
Change-Id: I7b843b283b07056e6f37ed1fe69da011f59bb857
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2285203Reviewed-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@{#785938}

DEPS

@@ -1220,7 +1220,7 @@ deps = {
   },
 
   'src/third_party/perfetto':
-    Var('android_git') + '/platform/external/perfetto.git' + '@' + '509812647060893522be508e0ab5b6c62dec03bd',
+    Var('android_git') + '/platform/external/perfetto.git' + '@' + 'db0d1b0d2459e8a1efd6ed4b42c0e5f4f8375804',
 
   'src/third_party/perl': {
       'url': Var('chromium_git') + '/chromium/deps/perl.git' + '@' + '6f3e5028eb65d0b4c5fdd792106ac4c84eee1eb3',