Simple BlinkGC heap compaction.

third_party/WebKit/Source/platform/heap/HeapTest.cpp

Index: third_party/WebKit/Source/platform/heap/HeapTest.cpp
diff --git a/third_party/WebKit/Source/platform/heap/HeapTest.cpp b/third_party/WebKit/Source/platform/heap/HeapTest.cpp
index 5570f70fb115788ddbc9fda0c0b7dc89217792d4..b615b331a729ebed85284e994f86e4c5a28b9030 100644
--- a/third_party/WebKit/Source/platform/heap/HeapTest.cpp
+++ b/third_party/WebKit/Source/platform/heap/HeapTest.cpp
@@ -332,7 +332,7 @@ class CountingVisitor : public Visitor {
     m_count++;
   }
 
-  void registerDelayedMarkNoTracing(const void*) override {}
+  void registerDelayedMarkNoTracing(void**) override {}
   void registerWeakMembers(const void*, const void*, WeakCallback) override {}
   void registerWeakTable(const void*,
                          EphemeronCallback,
@@ -349,6 +349,12 @@ class CountingVisitor : public Visitor {
     return true;
   }
 
+  void registerMovingObjectReference(MovableReference*) override {}
+
+  void registerMovingObjectCallback(MovableReference,
+                                    MovingObjectCallback,
+                                    void*) override {}
+
   size_t count() { return m_count; }
   void reset() { m_count = 0; }