Oilpan: fix GC_PROFILE_MARKING compilation.

Source/platform/heap/Heap.cpp

Index: Source/platform/heap/Heap.cpp
diff --git a/Source/platform/heap/Heap.cpp b/Source/platform/heap/Heap.cpp
index 9400168bd916afc3b7e629dea57e32e3d5e5f5d2..286a938816424c09c680e00756299851a9ed6217 100644
--- a/Source/platform/heap/Heap.cpp
+++ b/Source/platform/heap/Heap.cpp
@@ -2380,7 +2380,7 @@ const GCInfo* Heap::findGCInfo(Address address)
 #if ENABLE(GC_PROFILE_MARKING)
 void Heap::dumpPathToObjectOnNextGC(void* p)
 {
-    static_cast<MarkingVisitor*>(s_markingVisitor)->dumpPathToObjectOnNextGC(p);
+    static_cast<MarkingVisitor<GlobalMarking>*>(s_markingVisitor)->dumpPathToObjectOnNextGC(p);
 }
 
 String Heap::createBacktraceString()
@@ -2548,7 +2548,7 @@ void Heap::collectGarbage(ThreadState::StackState stackState, ThreadState::GCTyp
     TRACE_EVENT_SCOPED_SAMPLING_STATE("blink_gc", "BlinkGC");
     double timeStamp = WTF::currentTimeMS();
 #if ENABLE(GC_PROFILE_MARKING)
-    static_cast<MarkingVisitor*>(s_markingVisitor)->objectGraph().clear();
+    static_cast<MarkingVisitor<GlobalMarking>*>(s_markingVisitor)->objectGraph().clear();
 #endif
 
     // Disallow allocation during garbage collection (but not
@@ -2590,7 +2590,7 @@ void Heap::collectGarbage(ThreadState::StackState stackState, ThreadState::GCTyp
     leaveGC();
 
 #if ENABLE(GC_PROFILE_MARKING)
-    static_cast<MarkingVisitor*>(s_markingVisitor)->reportStats();
+    static_cast<MarkingVisitor<GlobalMarking>*>(s_markingVisitor)->reportStats();
 #endif
 
     if (Platform::current()) {