DevTools: implement console.timeline/timelineEnd.

Source/core/page/ConsoleBase.h

Index: Source/core/page/ConsoleBase.h
diff --git a/Source/core/page/ConsoleBase.h b/Source/core/page/ConsoleBase.h
index 07a69552db7af90da16057f9d3d0242a6596125d..4fcd97157966ba02ab00005ebb40051844c04fec 100644
--- a/Source/core/page/ConsoleBase.h
+++ b/Source/core/page/ConsoleBase.h
@@ -61,12 +61,14 @@ public:
     void trace(ScriptState*, PassRefPtr<ScriptArguments>);
     void assertCondition(ScriptState*, PassRefPtr<ScriptArguments>, bool condition);
     void count(ScriptState*, PassRefPtr<ScriptArguments>);
-    void markTimeline(PassRefPtr<ScriptArguments>);
+    void markTimeline(const String&);
     void profile(ScriptState*, const String&);
     void profileEnd(ScriptState*, const String&);
     void time(const String&);
     void timeEnd(ScriptState*, const String&);
-    void timeStamp(PassRefPtr<ScriptArguments>);
+    void timeStamp(const String&);
+    void timeline(ScriptState*, const String&);
+    void timelineEnd(ScriptState*, const String&);
     void group(ScriptState*, PassRefPtr<ScriptArguments>);
     void groupCollapsed(ScriptState*, PassRefPtr<ScriptArguments>);
     void groupEnd();