Roll Perfetto from 4f973a50bbbc to d937502d15b9 (3 revisions)

https://android.googlesource.com/platform/external/perfetto.git/+log/4f973a50bbbc..d937502d15b9

2020-09-23 treehugger-gerrit@google.com Merge "Update clang to llvmorg-12-init-5035-gd0abc757-3"
2020-09-23 hjd@google.com Merge "Remove Dropbox code from android_internal"
2020-09-23 taylori@google.com Merge "perfetto-ui: Only intialize GA on prod or staging"

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: I185979c36c3b6ab390135f9b848f872b790fdecf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2425893Reviewed-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@{#809761}

DEPS

@@ -1254,7 +1254,7 @@ deps = {
   },
 
   'src/third_party/perfetto':
-    Var('android_git') + '/platform/external/perfetto.git' + '@' + '4f973a50bbbc59c19795cea52d33f1c01d388767',
+    Var('android_git') + '/platform/external/perfetto.git' + '@' + 'd937502d15b95ef582e2231dab96564f3bdb3fce',
 
   'src/third_party/perl': {
       'url': Var('chromium_git') + '/chromium/deps/perl.git' + '@' + '6f3e5028eb65d0b4c5fdd792106ac4c84eee1eb3',