Refactor Timer classes in preparation for landing FrameTimers.

third_party/WebKit/Source/core/page/EventSource.cpp

Index: third_party/WebKit/Source/core/page/EventSource.cpp
diff --git a/third_party/WebKit/Source/core/page/EventSource.cpp b/third_party/WebKit/Source/core/page/EventSource.cpp
index 77c3b18399948f3563ca17992661c1d2d4fd23e5..77e707417c4a7780e79b3402cc1f568aae3788cd 100644
--- a/third_party/WebKit/Source/core/page/EventSource.cpp
+++ b/third_party/WebKit/Source/core/page/EventSource.cpp
@@ -170,7 +170,7 @@ void EventSource::scheduleReconnect()
     dispatchEvent(Event::create(EventTypeNames::error));
 }
 
-void EventSource::connectTimerFired(Timer<EventSource>*)
+void EventSource::connectTimerFired(TimerBase*)
 {
     connect();
 }