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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - ENABLE_OPENGL=OFF build broken since r201802"
   href="https://bugs.webkit.org/show_bug.cgi?id=159909">159909</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>ENABLE_OPENGL=OFF build broken since r201802
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>WebKit Gtk
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>clopez&#64;igalia.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>bugs-noreply&#64;webkitgtk.org, cgarcia&#64;igalia.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Since r201802 building WebKitGTK+ with -DENABLE_OPENGL=OFF fails with:

../../Source/WebKit2/WebProcess/WebPage/LayerTreeHost.cpp:44:38: error: implicit instantiation of undefined template 'WTF::RefPtr&lt;WebKit::LayerTreeHost&gt;'
RefPtr&lt;LayerTreeHost&gt; LayerTreeHost::create(WebPage&amp; webPage)
                                     ^
../../Source/WTF/wtf/Forward.h:35:28: note: template is declared here
template&lt;typename T&gt; class RefPtr;
                           ^
../../Source/WebKit2/WebProcess/WebPage/LayerTreeHost.cpp:54:12: error: implicit instantiation of undefined template 'WTF::RefPtr&lt;WebKit::LayerTreeHost&gt;'
    return nullptr;
           ^
../../Source/WTF/wtf/Forward.h:35:28: note: template is declared here
template&lt;typename T&gt; class RefPtr;
                           ^
2 errors generated.</pre>
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