Roll Perfetto from 447e7a69ecdd to 21205c372020 (2 revisions)

https://android.googlesource.com/platform/external/perfetto.git/+log/447e7a69ecdd..21205c372020

2020-09-09 treehugger-gerrit@google.com Merge "Ensure unique entries in power_profile"
2020-09-09 hjd@google.com ui: Hack minimum screensize to fix heap profiles

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:168048193
Tbr: perfetto-bugs@google.com
Change-Id: I97cee88669380792a3cda63352b57342d6ef3726
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2401610Reviewed-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@{#805398}

DEPS

@@ -1249,7 +1249,7 @@ deps = {
   },
 
   'src/third_party/perfetto':
-    Var('android_git') + '/platform/external/perfetto.git' + '@' + '447e7a69ecdd3b685527304b41bde91dda0d1277',
+    Var('android_git') + '/platform/external/perfetto.git' + '@' + '21205c3720209f1d624a41b32af848464af678ed',
 
   'src/third_party/perl': {
       'url': Var('chromium_git') + '/chromium/deps/perl.git' + '@' + '6f3e5028eb65d0b4c5fdd792106ac4c84eee1eb3',