The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/af6f27363128a72a89cb581f3073c0e068854308

commit af6f27363128a72a89cb581f3073c0e068854308
Author: dtapuska <dtapuska@chromium.org>
Date: Mon Apr 24 21:49:14 2017

Send mouse events for disabled form controls.

Intent to Implement:
https://groups.google.com/a/chromium.org/d/msg/blink-dev/rhNbsYDBJes/Jvmtv6IbBwAJ

The HTML spec clearly indicates that only click should be prevented. Add
a flag to change the behaviour and put it as an experimental flag for now.

Click events will not be dispatched if a disabled form control exists in
the event path.

BUG=696686, 693521

Review-Url: https://codereview.chromium.org/2832073003
Cr-Commit-Position: refs/heads/master@{#466783}

[add] https://crrev.com/af6f27363128a72a89cb581f3073c0e068854308/third_party/WebKit/LayoutTests/fast/forms/mouseevent_disabled_form_control.html
[modify] https://crrev.com/af6f27363128a72a89cb581f3073c0e068854308/third_party/WebKit/Source/core/dom/Node.cpp
[modify] https://crrev.com/af6f27363128a72a89cb581f3073c0e068854308/third_party/WebKit/Source/core/events/EventPath.cpp
[modify] https://crrev.com/af6f27363128a72a89cb581f3073c0e068854308/third_party/WebKit/Source/core/events/EventPath.h
[modify] https://crrev.com/af6f27363128a72a89cb581f3073c0e068854308/third_party/WebKit/Source/core/events/MouseEvent.cpp
[modify] https://crrev.com/af6f27363128a72a89cb581f3073c0e068854308/third_party/WebKit/Source/core/html/HTMLSelectElement.cpp
[modify] https://crrev.com/af6f27363128a72a89cb581f3073c0e068854308/third_party/WebKit/Source/platform/RuntimeEnabledFeatures.json5

This issue has been automatically relabelled type=task because type=launch-owp issues are now officially deprecated. The deprecation is because they were creating confusion about how to get launch approvals, which should be instead done via type=launch issues.

We recommend this issue be used for implementation tracking (for public visibility), but if you already have an issue for that, you may mark this as duplicate.

For more details see here: https://docs.google.com/document/d/1JA6RohjtZQc26bTrGoIE_bSXGXUDQz8vc6G0n_sZJ2o/edit

For any questions, please contact owencm, sshruthi, larforge

Intent to Ship here: https://groups.google.com/a/chromium.org/d/msg/blink-dev/KHXNJINUrj0/OAAh-sWuAwAJ

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f523304b1cf28c88a1f2a21a9c42119b8e6f5b29

commit f523304b1cf28c88a1f2a21a9c42119b8e6f5b29
Author: Dave Tapuska <dtapuska@chromium.org>
Date: Wed Jan 03 21:03:03 2018

Add ability to count mouseup/down on disabled form controls.

This will count the number of pages we encounter with mouseup/down
listeners in the event path on disable form controls.

BUG=696686

Change-Id: I73102564444348c150714a8189bcab8738c9fa15
Reviewed-on: https://chromium-review.googlesource.com/847424
Reviewed-by: Mustaq Ahmed <mustaq@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#526807}
[modify] https://crrev.com/f523304b1cf28c88a1f2a21a9c42119b8e6f5b29/third_party/WebKit/Source/core/dom/Node.cpp
[modify] https://crrev.com/f523304b1cf28c88a1f2a21a9c42119b8e6f5b29/third_party/WebKit/Source/core/dom/events/EventPath.cpp
[modify] https://crrev.com/f523304b1cf28c88a1f2a21a9c42119b8e6f5b29/third_party/WebKit/Source/core/dom/events/EventPath.h
[modify] https://crrev.com/f523304b1cf28c88a1f2a21a9c42119b8e6f5b29/third_party/WebKit/Source/core/events/MouseEvent.cpp
[modify] https://crrev.com/f523304b1cf28c88a1f2a21a9c42119b8e6f5b29/third_party/WebKit/public/platform/web_feature.mojom
[modify] https://crrev.com/f523304b1cf28c88a1f2a21a9c42119b8e6f5b29/tools/metrics/histograms/enums.xml