Add blink_style to trace event end for updateStyle

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index cd1f453988f191fa7115e873f4c6e5fb25845c9b..c0cde12bbb955c2c0ba28177c059a4823b32aedc 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -1845,7 +1845,7 @@ void Document::updateStyle(StyleRecalcChange change)
     ASSERT(!childNeedsStyleRecalc());
     ASSERT(inStyleRecalc());
     m_lifecycle.advanceTo(DocumentLifecycle::StyleClean);
-    TRACE_EVENT_END1("blink", "Document::updateStyle", "resolverAccessCount", styleEngine().resolverAccessCount() - initialResolverAccessCount);
+    TRACE_EVENT_END1("blink,blink_style", "Document::updateStyle", "resolverAccessCount", styleEngine().resolverAccessCount() - initialResolverAccessCount);
 }
 
 void Document::updateRenderTreeForNodeIfNeeded(Node* node)