Resource Load Statistics: Check if the store exists before clearing it

[John Wilander]

Non-web clients may delete website data records. In such cases the shared observer will not have a store to clear so we should check that it exists.

[John Wilander]

rdar://problem/31258505

[John Wilander]

Created attachment 305940 [details]
Patch

[Brent Fulgham]

Comment on attachment 305940 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=305940&action=review

r=me

> Source/WebCore/loader/ResourceLoadObserver.cpp:74
> +        m_store->clearInMemoryAndPersistent();

We should audit the code for other cases like this, since we now realize there are other WK2 clients that are not browsers.

[John Wilander]

(In reply to Brent Fulgham from comment #3)
> Comment on attachment 305940 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=305940&action=review
> 
> r=me

Thanks!

> > Source/WebCore/loader/ResourceLoadObserver.cpp:74
> > +        m_store->clearInMemoryAndPersistent();
> 
> We should audit the code for other cases like this, since we now realize
> there are other WK2 clients that are not browsers.

Agreed. The root cause is the static sharedObserver() getter which anyone can call, no matter how they’ve set up the WebsiteDataStore. I'll land this and take another look.

[WebKit Commit Bot]

Comment on attachment 305940 [details]
Patch

Clearing flags on attachment: 305940

Committed r214669: <http://trac.webkit.org/changeset/214669>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.