Roll Perfetto from 88ee6a6370c5 to 472239462122 (3 revisions)

https://android.googlesource.com/platform/external/perfetto.git/+log/88ee6a6370c5..472239462122

2021-01-05 fmayer@google.com Merge "Allow to target heaps registered during running profile."
2021-01-05 rsavitski@google.com Merge "client: move comment back to the relevant function"
2021-01-05 treehugger-gerrit@google.com Merge "client: fix return value when reporting is unsuccessful, add api test"

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: None
Tbr: perfetto-bugs@google.com
Change-Id: I545402266af6405633ea0e2ae7ab18f0a3c8ed80
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2610884Reviewed-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@{#840177}

DEPS

@@ -1262,7 +1262,7 @@ deps = {
   },
 
   'src/third_party/perfetto':
-    Var('android_git') + '/platform/external/perfetto.git' + '@' + '88ee6a6370c5ba5ecdb437636d9f3dd8824d1abe',
+    Var('android_git') + '/platform/external/perfetto.git' + '@' + '4722394621223824ab05728fe07e904f70a6f587',
 
   'src/third_party/perl': {
       'url': Var('chromium_git') + '/chromium/deps/perl.git' + '@' + '6f3e5028eb65d0b4c5fdd792106ac4c84eee1eb3',