Generate long task timing entries when long task is reported.

third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h

Index: third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
diff --git a/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h b/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
index 471538be4474ce358fa4ab80d0c07a5adbaae5e7..b590ed634f345dbed9067be25c6c850f51bc8d7f 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
+++ b/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
@@ -13,6 +13,7 @@
 namespace blink {
 
 class ExecutionContext;
+class Frame;
 class LocalFrame;
 class Location;
 class InspectedFrames;
@@ -44,6 +45,8 @@ public:
 
 private:
     bool m_enabled;
+    String sanitizedLongTaskName(const HeapHashSet<Member<Location>>& frameContextLocations, Frame* rootFrame);
+
     Member<InspectedFrames> m_inspectedFrames;
     HeapHashSet<Member<Location>> m_frameContextLocations;
 };