DevTools: Add timestamp support in the console

Source/core/inspector/ConsoleMessage.h

Index: Source/core/inspector/ConsoleMessage.h
diff --git a/Source/core/inspector/ConsoleMessage.h b/Source/core/inspector/ConsoleMessage.h
index 430fe13a31d54b23ec504468d4f836c39bd53a70..4fa9d08c74b77011a69728334c52ef2976a4d85f 100644
--- a/Source/core/inspector/ConsoleMessage.h
+++ b/Source/core/inspector/ConsoleMessage.h
@@ -57,10 +57,7 @@ public:
     ~ConsoleMessage();
 
     void addToFrontend(InspectorFrontend::Console*, InjectedScriptManager*, bool generatePreview);
-    void updateRepeatCountInConsole(InspectorFrontend::Console*);
-    void incrementCount();
     void setTimestamp(double timestamp) { m_timestamp = timestamp; }
-    bool isEqual(ConsoleMessage* msg) const;
 
     MessageType type() const { return m_type; }
 
@@ -80,7 +77,6 @@ private:
     String m_url;
     unsigned m_line;
     unsigned m_column;
-    unsigned m_repeatCount;
     String m_requestId;
     double m_timestamp;
 };