Revert "Roll src/third_party/perfetto 7980e5ea3e34..51516f076308 (4 commits)"

This reverts commit 76367552.

Reason for revert: Suspecting HeapGraphWalkerTest.AllGraphs 
 failure crbug.com/1023685

Original change's description:
> Roll src/third_party/perfetto 7980e5ea3e34..51516f076308 (4 commits)
> 
> https://android.googlesource.com/platform/external/perfetto.git/+log/7980e5ea3e34..51516f076308
> 
> git log 7980e5ea3e34..51516f076308 --date=short --no-merges --format='%ad %ae %s'
> 2019-11-11 fmayer@google.com Merge "Do not count roots as unique_retained."
> 2019-11-11 rsavitski@google.com Merge "compact_sched: remove "unstable" notices"
> 2019-11-11 rsavitski@google.com Merge "compact sched_waking: event decoding in trace_processor"
> 2019-11-11 rsavitski@google.com Merge "compact sched_waking: writer (traced_probes)"
> 
> Created with:
>   gclient setdep -r src/third_party/perfetto@51516f076308
> 
> 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/+/master/autoroll/README.md
> 
> TBR=perfetto-bugs@google.com
> 
> Bug: None
> Change-Id: I85e20b4475481af1fd2c2c1eaca3b224e6cbba8e
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1910168
> Reviewed-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@{#714258}

TBR=chromium-autoroll@skia-public.iam.gserviceaccount.com,perfetto-bugs@google.com

Change-Id: Idd397943cbe6966334287367966081845b1ba2b3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: None
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1910980Reviewed-by: Keishi Hattori <keishi@chromium.org>
Commit-Queue: Keishi Hattori <keishi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714364}

DEPS

@@ -1294,7 +1294,7 @@ deps = {
   },
 
   'src/third_party/perfetto':
-    Var('android_git') + '/platform/external/perfetto.git' + '@' + '51516f076308f8142fd43f911d5e01178017f35d',
+    Var('android_git') + '/platform/external/perfetto.git' + '@' + '7980e5ea3e3474de2c7476b995c3842857d2f749',
 
   'src/third_party/perl': {
       'url': Var('chromium_git') + '/chromium/deps/perl.git' + '@' + '6f3e5028eb65d0b4c5fdd792106ac4c84eee1eb3',