Add a fast-path for independent inherited properties

third_party/WebKit/Source/core/dom/shadow/InsertionPoint.cpp

Index: third_party/WebKit/Source/core/dom/shadow/InsertionPoint.cpp
diff --git a/third_party/WebKit/Source/core/dom/shadow/InsertionPoint.cpp b/third_party/WebKit/Source/core/dom/shadow/InsertionPoint.cpp
index 0657d8790fb800d1a33b4c2a49037132498a02d6..4f321667275a6f5cfe8e00efe106feb5b83af72b 100644
--- a/third_party/WebKit/Source/core/dom/shadow/InsertionPoint.cpp
+++ b/third_party/WebKit/Source/core/dom/shadow/InsertionPoint.cpp
@@ -122,7 +122,7 @@ void InsertionPoint::detachLayoutTree(const AttachContext& context)
 
 void InsertionPoint::willRecalcStyle(StyleRecalcChange change)
 {
-    if (change < Inherit && getStyleChangeType() < SubtreeStyleChange)
+    if (change < IndependentInherit && getStyleChangeType() < SubtreeStyleChange)
         return;
     for (size_t i = 0; i < m_distributedNodes.size(); ++i)
         m_distributedNodes.at(i)->setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::PropagateInheritChangeToDistributedNodes));