providing findit results for internal purpose:
Suspected CLs	Findit could not determine the memory tool from the stacktrace. Is it in a new format?

using codesearch, seeing some changes to PopupMenuImpl.cpp in 
https://chromium.googlesource.com/chromium/src/+/c97868e41b5ad5c2d12a5520f4e554d3fdeb177e

tkent@, Could you please check the above issue & help us in finding an owner it its not yours.

When Tab or Enter is pressed without selection, we call setValueAndClosePopup() with an empty string.  It causes a DCHECK failure.
However this bug won't cause serious problems.

ListPicker.prototype._handleKeyDown = function(event) {
    ...
    } else if (key === "Tab" || key === "Enter") {
        window.pagePopupController.setValueAndClosePopup(0, this._selectElement.value);

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/676be06451fec4d4f2f0bab075f3b627ec1d1597

commit 676be06451fec4d4f2f0bab075f3b627ec1d1597
Author: tkent <tkent@chromium.org>
Date: Wed Sep 21 07:02:46 2016

Fix a DCHECK failure in PopupMenuImpl::setValueAndClosePopup().

|stringValue| may be empty.

BUG= 629029 

Review-Url: https://codereview.chromium.org/2350303005
Cr-Commit-Position: refs/heads/master@{#419991}

[modify] https://crrev.com/676be06451fec4d4f2f0bab075f3b627ec1d1597/third_party/WebKit/LayoutTests/fast/forms/select-popup/popup-menu-key-operations.html
[modify] https://crrev.com/676be06451fec4d4f2f0bab075f3b627ec1d1597/third_party/WebKit/LayoutTests/platform/win/fast/forms/select-popup/popup-menu-key-operations-expected.txt
[modify] https://crrev.com/676be06451fec4d4f2f0bab075f3b627ec1d1597/third_party/WebKit/Source/web/PopupMenuImpl.cpp

ClusterFuzz has detected this issue as fixed in range 419971:420014.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5073893090131968

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_debug_content_shell_drt
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  success in PopupMenuImpl.cpp
  blink::PopupMenuImpl::setValueAndClosePopup
  blink::PagePopupController::setValueAndClosePopup
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_debug_content_shell_drt&range=384595:384629
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_debug_content_shell_drt&range=419971:420014

Unminimized Testcase: https://cluster-fuzz.appspot.com/download/AMIfv96Ggj6ob1OalCJ50GUwXSqx5UHfxrrFxg6hH8RzLh_qKcrTgeTOnEPvfN63Z_wIWC8Q8HEQo31rnZmDnXvGfKc8siKHfyGAcaWAJej4up9oMXD1H-DVMRQ90aqUtjByAu2KZoFR8bWD7eMoUQ_UPgnE2C7fpQ?testcase_id=5073893090131968


Additional requirements: Requires Gestures

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