Introduce InlinedGlobalMarkingVisitor

Source/wtf/Vector.h

Index: Source/wtf/Vector.h
diff --git a/Source/wtf/Vector.h b/Source/wtf/Vector.h
index 7a6421bd5bc1dab05e03044328f500687a4d5c77..0036d9cbfc64ea560c2607f528db1aa7b9aa66cc 100644
--- a/Source/wtf/Vector.h
+++ b/Source/wtf/Vector.h
@@ -745,7 +745,7 @@ static const size_t kInitialVectorSize = WTF_VECTOR_INITIAL_SIZE;
 
         void reverse();
 
-        void trace(typename Allocator::Visitor*);
+        template<typename VisitorDispatcher> void trace(VisitorDispatcher visitor);
 
     private:
         void expandCapacity(size_t newMinCapacity);
@@ -1210,9 +1210,10 @@ static const size_t kInitialVectorSize = WTF_VECTOR_INITIAL_SIZE;
     // This is only called if the allocator is a HeapAllocator. It is used when
     // visiting during a tracing GC.
     template<typename T, size_t inlineCapacity, typename Allocator>
-    void Vector<T, inlineCapacity, Allocator>::trace(typename Allocator::Visitor* visitor)
+    template<typename VisitorDispatcher>
+    void Vector<T, inlineCapacity, Allocator>::trace(VisitorDispatcher visitor)
     {
-        ASSERT(Allocator::isGarbageCollected); // Garbage collector must be enabled.
+        COMPILE_ASSERT(Allocator::isGarbageCollected, GarbageCollectorMustBeEnabled);
         const T* bufferBegin = buffer();
         const T* bufferEnd = buffer() + size();
         if (ShouldBeTraced<VectorTraits<T> >::value) {
@@ -1220,7 +1221,7 @@ static const size_t kInitialVectorSize = WTF_VECTOR_INITIAL_SIZE;
                 Allocator::template trace<T, VectorTraits<T> >(visitor, *const_cast<T*>(bufferEntry));
         }
         if (this->hasOutOfLineBuffer())
-            Allocator::markNoTracing(visitor, buffer());
+            visitor->markNoTracing(buffer());
     }
 
 #if !ENABLE(OILPAN)