All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=893784

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=0654befdf396d790e52e305eda545d9258da6c7cc69a14cda38f91c76700eb58


Bot(s) for this bug's original alert(s):

Win 7 Nvidia GPU Perf
Win 7 Perf
linux-perf
mac-10_12_laptop_low_end-perf
mac-10_13_laptop_high_end-perf

system_health.common_desktop - Benchmark documentation link:
  https://bit.ly/system-health-benchmarks

v8.browsing_desktop - Benchmark documentation link:
  None

system_health.memory_desktop - Benchmark documentation link:
  https://bit.ly/system-health-benchmarks

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/1198fbbae40000

📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/1198fbbae40000

[Extensions] Obliterating the inline install API. by ackermanb@chromium.org
https://chromium.googlesource.com/chromium/src/+/c4fb02304cc8ee7c6896f860f52fef72db1f069a
console:error:all: 10.9 → 15.6 (+4.7)

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

Benchmark documentation link:
  https://bit.ly/system-health-benchmarks

 Issue 893795  has been merged into this issue.

 Issue 893800  has been merged into this issue.

 Issue 894104  has been merged into this issue.

 Issue 892728  has been merged into this issue.

cc'ing reviewers.

It looks like this patch:
[Extensions] Obliterating the inline install API. by ackermanb@chromium.org
https://chromium.googlesource.com/chromium/src/+/c4fb02304cc8ee7c6896f860f52fef72db1f069a

regressed a bunch of performance tests.

Any thoughts on why this might be the case?