[webkit-dev] Platform specific fields on WebCore::HistoryItem

[Darin Fisher]

I'm working on fixing some session history bugs related to a HistoryItem's
URL property changing.
See for example the call to HistoryItem::setURL in
HistoryController::updateForReload [1].

I'm curious about the platform specific fields on WebCore::HistoryItem.  ***
Do any of those need to
be updated when the URL of the HistoryItem changes? ***

Here are the fields I'm referring to:

class HistoryItem ... {
private:
    ...
#if PLATFORM(MAC)
    RetainPtr<id> m_viewState;
    OwnPtr<HashMap<String, RetainPtr<id> > > m_transientProperties;
#endif

#if PLATFORM(QT)
    QVariant m_userData;
#endif

#if PLATFORM(ANDROID)
    RefPtr<AndroidWebHistoryBridge> m_bridge;
#endif
};

I'm not sure how these fields are used, and I would greatly appreciate input
from the respective
port maintainers.

Thanks,
-Darin

[1]
http://codesearch.google.com/codesearch/p?hl=en#OAMlx_jo-ck/src/third_party/WebKit/WebCore/loader/HistoryController.cpp&q=updateForReload&exact_package=chromium&sa=N&cd=1&ct=rc
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