[Webkit-unassigned] [Bug 153002] Form submit event has a long delay before triggering when many controls on the page

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=153002

--- Comment #1 from Chris Dumez <cdumez at apple.com> ---
I can reproduce with tip of tree. I see most of the CPU time spent in client code (injected bundle) under:
Running Time    Self (ms)        Symbol Name
994.0ms   24.5%    0.0                                                 WebKit::InjectedBundlePageFormClient::willSendSubmitEvent(WebKit::WebPage*, WebCore::HTMLFormElement*, WebKit::WebFrame*, WebKit::WebFrame*, WTF::Vector<std::__1::pair<WTF::String, WTF::String>, 0ul, WTF::CrashOnOverflow, 16ul> const&)

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