Move SVGElement::buildPendingResourcesIfNeeded to SVGTreeScopeResources

third_party/WebKit/Source/core/svg/SVGTreeScopeResources.cpp

 // Copyright 2017 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/svg/SVGTreeScopeResources.h"
 
 #include "core/dom/Element.h"
 #include "core/dom/TreeScope.h"
 #include "core/layout/svg/LayoutSVGResourceContainer.h"
 #include "core/layout/svg/SVGResourcesCache.h"
+#include "core/svg/SVGUseElement.h"
 #include "wtf/text/AtomicString.h"
 
 namespace blink {
 
 SVGTreeScopeResources::SVGTreeScopeResources(TreeScope* treeScope) {
   // Whenever an object of SVGTreeScopeResources is created, to keep the code
   // behave as before,
   // the document should also have an instance of SVGDocumentExtensions created.
   // Thus below line is added.
   treeScope->document().accessSVGExtensions();
@@ skipping 124 matching lines @@
       removePendingResource(id);
   }
 }
 
 SVGTreeScopeResources::SVGPendingElements*
 SVGTreeScopeResources::removePendingResource(const AtomicString& id) {
   DCHECK(m_pendingResources.contains(id));
   return m_pendingResources.take(id);
 }
 
+void SVGTreeScopeResources::notifyResourceAvailable(const AtomicString& id) {
+  if (id.isEmpty())
+    return;
+  // Get pending elements for this id.
+  SVGPendingElements* pendingElements = m_pendingResources.take(id);
+  if (!pendingElements)
+    return;
+  // Rebuild pending resources for each client of a pending resource that is
+  // being removed.
+  for (Element* clientElement : *pendingElements) {
+    DCHECK(clientElement->hasPendingResources());
+    if (!clientElement->hasPendingResources())
+      continue;
+    // TODO(fs): Ideally we'd always resolve pending resources async instead of
+    // inside insertedInto and svgAttributeChanged. For now we only do it for
+    // <use> since that would stamp out DOM.
+    if (isSVGUseElement(clientElement))
+      toSVGUseElement(clientElement)->invalidateShadowTree();
+    else
+      clientElement->buildPendingResource();
+
+    clearHasPendingResourcesIfPossible(clientElement);
+  }
+}
+
 DEFINE_TRACE(SVGTreeScopeResources) {
   visitor->trace(m_pendingResources);
 }
 }