Propagate inherited properties into slotted elements on recalc.

third_party/WebKit/Source/core/html/HTMLSlotElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLSlotElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLSlotElement.cpp b/third_party/WebKit/Source/core/html/HTMLSlotElement.cpp
index e6e061fd43441c0744f6756e3e144a599401666e..6be792f3adad27dde1371b8def2c19f719cfe199 100644
--- a/third_party/WebKit/Source/core/html/HTMLSlotElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLSlotElement.cpp
@@ -43,6 +43,7 @@ using namespace HTMLNames;
 inline HTMLSlotElement::HTMLSlotElement(Document& document)
     : HTMLElement(slotTag, document)
 {
+    setHasCustomStyleCallbacks();
 }
 
 DEFINE_NODE_FACTORY(HTMLSlotElement);
@@ -201,6 +202,15 @@ void HTMLSlotElement::removedFrom(ContainerNode* insertionPoint)
     HTMLElement::removedFrom(insertionPoint);
 }
 
+void HTMLSlotElement::willRecalcStyle(StyleRecalcChange change)
+{
+    if (change < Inherit && styleChangeType() < SubtreeStyleChange)
+        return;
+
+    for (Node* node : m_distributedNodes)

[kochi, 2016/02/19 08:04:56]

Hmm, this should have been RefPtrWillBeRawPtr<Node> instead of Node*.

+        node->setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::PropagateInheritChangeToDistributedNodes));
+}
+
 void HTMLSlotElement::updateDistributedNodesWithFallback()
 {
     if (!m_distributedNodes.isEmpty())