Make custom elements work in HTML imports

third_party/WebKit/Source/core/html/imports/HTMLImportTreeRoot.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/html/imports/HTMLImportTreeRoot.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/StyleEngine.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/imports/HTMLImportChild.h"
@@ skipping 69 matching lines @@
 {
     for (size_t i = 0; i < m_imports.size(); ++i) {
         HTMLImportChild* candidate = m_imports[i].get();
         if (equalIgnoringFragmentIdentifier(candidate->url(), url))
             return candidate;
     }
 
     return nullptr;
 }
 
+HTMLImportChild* HTMLImportTreeRoot::find(const Document& document) const

[dominicc (has gone to gerrit), 2016/08/22 08:07:36]

Per above, don't think you need this.

[kochi, 2016/08/22 12:02:00]

Removed!

+{
+    for (size_t i = 0; i < m_imports.size(); ++i) {
+        HTMLImportChild* candidate = m_imports[i].get();
+        if (candidate->document() == document)
+            return candidate;
+    }
+    return nullptr;
+}
+
 void HTMLImportTreeRoot::recalcTimerFired(TimerBase*)
 {
     DCHECK(m_document);
     HTMLImport::recalcTreeState(this);
 }
 
 DEFINE_TRACE(HTMLImportTreeRoot)
 {
     visitor->trace(m_document);
     visitor->trace(m_imports);
     HTMLImport::trace(visitor);
 }
 
 } // namespace blink