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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Web Inspector: split out CSSAgent wrapper classes to fix protocol layering violation and cruft"
   href="https://bugs.webkit.org/show_bug.cgi?id=141877#c4">Comment # 4</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Web Inspector: split out CSSAgent wrapper classes to fix protocol layering violation and cruft"
   href="https://bugs.webkit.org/show_bug.cgi?id=141877">bug 141877</a>
              from <span class="vcard"><a class="email" href="mailto:timothy@apple.com" title="Timothy Hatcher <timothy@apple.com>"> <span class="fn">Timothy Hatcher</span></a>
</span></b>
        <pre>Comment on <span class=""><a href="attachment.cgi?id=247080&action=diff" name="attach_247080" title="WIP">attachment 247080</a> <a href="attachment.cgi?id=247080&action=edit" title="WIP">[details]</a></span>
WIP

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=247080&action=review">https://bugs.webkit.org/attachment.cgi?id=247080&action=review</a>

Looks nice! I'll defer to others for this review, but I found two little nits up front.

<span class="quote">> Source/WebCore/inspector/InspectorCSSAgent.cpp:201
> +        return String::format("SetStyleSheetText %" PRIu64, m_ruleSet->identifier());</span >

%llu instead of PRIu64? I had to Google it.

<span class="quote">> Source/WebCore/inspector/InspectorCSSAgent.cpp:555
> +                CSSStyleDeclaration* style = ruleSet ? ruleSet->inlineStyle() : nullptr;
> +                if (style)</span >

Nit: One line.</pre>
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