The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d6f045cfbb2b18a0d93783eb57c065f5acea7e6b

commit d6f045cfbb2b18a0d93783eb57c065f5acea7e6b
Author: Alexei Filippov <alph@chromium.org>
Date: Mon Oct 01 20:11:23 2018

DevTools: Fix hitCount calculation for CPU profiles.

BUG= 890467 

Change-Id: Ie0e7fc413c068a83c9e225c63bc3e3abdebf3120
Reviewed-on: https://chromium-review.googlesource.com/1252636
Commit-Queue: Alexei Filippov <alph@chromium.org>
Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Paul Irish <paulirish@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595536}
[add] https://crrev.com/d6f045cfbb2b18a0d93783eb57c065f5acea7e6b/third_party/WebKit/LayoutTests/http/tests/devtools/profiler/cpu-profiler-parsing-no-hitcounts-expected.txt
[add] https://crrev.com/d6f045cfbb2b18a0d93783eb57c065f5acea7e6b/third_party/WebKit/LayoutTests/http/tests/devtools/profiler/cpu-profiler-parsing-no-hitcounts.js
[modify] https://crrev.com/d6f045cfbb2b18a0d93783eb57c065f5acea7e6b/third_party/blink/renderer/devtools/front_end/sdk/CPUProfileDataModel.js