Move markerlists to Oilpan heap and remove finalizer from DocumentMarkerController

Source/web/ContextMenuClientImpl.cpp

Index: Source/web/ContextMenuClientImpl.cpp
diff --git a/Source/web/ContextMenuClientImpl.cpp b/Source/web/ContextMenuClientImpl.cpp
index d1b49209c74095ab4657ae1c94ad65b1ed610740..317c71287a6133a4012288d93c6a2cec4f9de80f 100644
--- a/Source/web/ContextMenuClientImpl.cpp
+++ b/Source/web/ContextMenuClientImpl.cpp
@@ -159,7 +159,7 @@ static String selectMisspellingAsync(LocalFrame* selectedFrame, DocumentMarker&
 
     // Caret and range selections always return valid normalized ranges.
     RefPtrWillBeRawPtr<Range> selectionRange = selection.toNormalizedRange();
-    Vector<DocumentMarker*> markers = selectedFrame->document()->markers().markersInRange(selectionRange.get(), DocumentMarker::MisspellingMarkers());
+    WillBeHeapVector<DocumentMarker*> markers = selectedFrame->document()->markers().markersInRange(selectionRange.get(), DocumentMarker::MisspellingMarkers());
     if (markers.size() != 1)
         return String();
     marker = *markers[0];