Track reasons for |Node::SetNeedsStyleRecalc|

Source/core/dom/Fullscreen.cpp

Index: Source/core/dom/Fullscreen.cpp
diff --git a/Source/core/dom/Fullscreen.cpp b/Source/core/dom/Fullscreen.cpp
index 64b67a512ecf0eaffa02f3a1ab79bd769c43df31..eb8e1254dc327e27833ea607a87a18d017368b9b 100644
--- a/Source/core/dom/Fullscreen.cpp
+++ b/Source/core/dom/Fullscreen.cpp
@@ -438,7 +438,7 @@ void Fullscreen::didEnterFullScreenForElement(Element* element)
     m_fullScreenElement->setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(true);
 
     // FIXME: This should not call updateStyleIfNeeded.
-    document()->setNeedsStyleRecalc(SubtreeStyleChange);
+    document()->setNeedsStyleRecalc(StyleChangeReasonForTracing::create(StyleChangeReason::FullScreen), SubtreeStyleChange);
     document()->updateRenderTreeIfNeeded();
 
     m_fullScreenElement->didBecomeFullscreenElement();
@@ -467,7 +467,7 @@ void Fullscreen::didExitFullScreenForElement(Element*)
         m_fullScreenRenderer->unwrapRenderer();
 
     m_fullScreenElement = nullptr;
-    document()->setNeedsStyleRecalc(SubtreeStyleChange);
+    document()->setNeedsStyleRecalc(StyleChangeReasonForTracing::create(StyleChangeReason::FullScreen), SubtreeStyleChange);
 
     if (document()->frame())
         document()->frame()->eventHandler().scheduleHoverStateUpdate();