Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/html/track/TextTrackCue.cpp

Index: third_party/WebKit/Source/core/html/track/TextTrackCue.cpp
diff --git a/third_party/WebKit/Source/core/html/track/TextTrackCue.cpp b/third_party/WebKit/Source/core/html/track/TextTrackCue.cpp
index d1dd77dbb8d97bb21e859240f025dc3a59b4a380..2a343232d82d0d3a5acf40b9f26ed42d4c23f0da 100644
--- a/third_party/WebKit/Source/core/html/track/TextTrackCue.cpp
+++ b/third_party/WebKit/Source/core/html/track/TextTrackCue.cpp
@@ -136,7 +136,7 @@ unsigned TextTrackCue::cueIndex()
     return m_cueIndex;
 }
 
-bool TextTrackCue::dispatchEventInternal(PassRefPtrWillBeRawPtr<Event> event)
+bool TextTrackCue::dispatchEventInternal(RawPtr<Event> event)
 {
     // When a TextTrack's mode is disabled: no cues are active, no events fired.
     if (!track() || track()->mode() == TextTrack::disabledKeyword())