We currently have no data on how often this is used.
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/10f9761b74d51ae9116e16c18fd35bf4713fc819 commit 10f9761b74d51ae9116e16c18fd35bf4713fc819 Author: sunyunjia <sunyunjia@chromium.org> Date: Wed Sep 07 17:53:53 2016 Add UMA measuring pan scrolling usage. BUG= 643167 Review-Url: https://codereview.chromium.org/2302133002 Cr-Commit-Position: refs/heads/master@{#416991} [modify] https://crrev.com/10f9761b74d51ae9116e16c18fd35bf4713fc819/third_party/WebKit/LayoutTests/NeverFixTests [add] https://crrev.com/10f9761b74d51ae9116e16c18fd35bf4713fc819/third_party/WebKit/LayoutTests/fast/events/panScroll-use-count.html [modify] https://crrev.com/10f9761b74d51ae9116e16c18fd35bf4713fc819/third_party/WebKit/Source/core/frame/UseCounter.h [modify] https://crrev.com/10f9761b74d51ae9116e16c18fd35bf4713fc819/third_party/WebKit/Source/core/page/AutoscrollController.cpp [modify] https://crrev.com/10f9761b74d51ae9116e16c18fd35bf4713fc819/tools/metrics/histograms/histograms.xml
Comment 1 by sunyunjia@chromium.org
, Sep 2 2016