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          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Fix the USE(COORDINATED_GRAPHICS) build after r206712"
   href="https://bugs.webkit.org/show_bug.cgi?id=162862">162862</a>
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        <tr>
          <th>Summary</th>
          <td>Fix the USE(COORDINATED_GRAPHICS) build after r206712
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>Other
          </td>
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        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
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        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
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        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Blocker
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P1
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>ossy&#64;webkit.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>cgarcia&#64;igalia.com, clopez&#64;igalia.com, gyuyoung.kim&#64;webkit.org, hs85.jeong&#64;samsung.com, simon.fraser&#64;apple.com, zalan&#64;apple.com
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        <pre><a href="https://trac.webkit.org/changeset/206712">https://trac.webkit.org/changeset/206712</a> broke the USE(COORDINATED_GRAPHICS) build - EFL and GTK:
- <a href="https://build.webkit.org/builders/EFL%20Linux%2064-bit%20Release%20WK2/builds/29947">https://build.webkit.org/builders/EFL%20Linux%2064-bit%20Release%20WK2/builds/29947</a>
- <a href="https://build.webkit.org/builders/GTK%20Linux%2064-bit%20Release%20%28Build%29/builds/73574">https://build.webkit.org/builders/GTK%20Linux%2064-bit%20Release%20%28Build%29/builds/73574</a>

../../Source/WebCore/page/scrolling/ScrollingStateTree.cpp: In member function ‘WebCore::ScrollingNodeID WebCore::ScrollingStateTree::attachNode(WebCore::ScrollingNodeType, WebCore::ScrollingNodeID, WebCore::ScrollingNodeID)’:
../../Source/WebCore/page/scrolling/ScrollingStateTree.cpp:108:47: error: invalid use of incomplete type ‘class WebCore::AsyncScrollingCoordinator’
             newNodeID = m_scrollingCoordinator-&gt;uniqueScrollLayerID();
invalid use of incomplete type ‘class WebCore::AsyncScrollingCoordinator’
             newNodeID = m_scrollingCoordinator-&gt;uniqueScrollLayerID();

The problem is that AsyncScrollingCoordinator is a Mac only class guarded by ENABLE(ASYNC_SCROLLING).
m_scrollingCoordinator shouldn't be used anywhere without the same guard.

( note: I just reported the bug to let you know that the build is broken,
I don't have any plan and any time to work on the fix or help fixing. )</pre>
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