Refactor incremental marking to use static visitor.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index cd853809c2599d242d4b384b07adda6ea011e179..7e171a7d75506cd63c0ce081b6165fd919aff1bd 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -5707,8 +5707,6 @@ class SharedFunctionInfo: public HeapObject {
   static bool CompileLazy(Handle<SharedFunctionInfo> shared,
                           ClearExceptionFlag flag);
 
-  void SharedFunctionInfoIterateBody(ObjectVisitor* v);
-
   // Casting.
   static inline SharedFunctionInfo* cast(Object* obj);
 
@@ -8830,8 +8828,6 @@ class ObjectVisitor BASE_EMBEDDED {
   // Visit pointer embedded into a code object.
   virtual void VisitEmbeddedPointer(RelocInfo* rinfo);
 
-  virtual void VisitSharedFunctionInfo(SharedFunctionInfo* shared) {}
-
   // Visits a contiguous arrays of external references (references to the C++
   // heap) in the half-open range [start, end). Any or all of the values
   // may be modified on return.