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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Media Session: propagate metadata changes to UI clients"
   href="https://bugs.webkit.org/show_bug.cgi?id=146660#c12">Comment # 12</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Media Session: propagate metadata changes to UI clients"
   href="https://bugs.webkit.org/show_bug.cgi?id=146660">bug 146660</a>
              from <span class="vcard"><a class="email" href="mailto:mrajca&#64;apple.com" title="Matt Rajca &lt;mrajca&#64;apple.com&gt;"> <span class="fn">Matt Rajca</span></a>
</span></b>
        <pre>(In reply to <a href="show_bug.cgi?id=146660#c11">comment #11</a>)
<span class="quote">&gt; Comment on <span class=""><a href="attachment.cgi?id=256318&amp;action=diff" name="attach_256318" title="Patch">attachment 256318</a> <a href="attachment.cgi?id=256318&amp;action=edit" title="Patch">[details]</a></span>
&gt; Patch
&gt; 
&gt; View in context:
&gt; <a href="https://bugs.webkit.org/attachment.cgi?id=256318&amp;action=review">https://bugs.webkit.org/attachment.cgi?id=256318&amp;action=review</a>
&gt; 
&gt; &gt; Source/WebKit2/UIProcess/API/C/WKMediaSessionMetadata.cpp:49
&gt; &gt; +    return 0;
&gt; 
&gt; These should be nullptr, not 0, I think?</span >

Fixed. Not sure why we were using 0 in other WK* sources.

<span class="quote">&gt; 
&gt; &gt; Source/WebKit2/UIProcess/API/C/WKPageUIClient.h:456
&gt; &gt; +    WKPageMediaSessionMetadataDidChangeCallback                         mediaSessionMetadataDidChange;
&gt; 
&gt; Please make sure that it's OK to add this without bumping the version number
&gt; and that you do everything necessary to not break internal builds because of
&gt; it.</span >

I'll watch the bots. Looks like Brady added a few callbacks last month and things were okay.</pre>
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