Refactor how embedded pointers are visited.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 2b53ff19369ff526768d4308fdfad82855d5d1ca..b95fa574a05c9af262f5fbd64a206a7c203d682b 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7534,11 +7534,7 @@ class ObjectVisitor BASE_EMBEDDED {
   virtual void VisitPointer(Object** p) { VisitPointers(p, p + 1); }
 
   // Visit pointer embedded into a code object.
-  virtual void VisitEmbeddedPointer(Code* host, Object** p) {
-    // Default implementation for the convenience of users that do
-    // not care about the host object.
-    VisitPointer(p);
-  }
+  virtual void VisitEmbeddedPointer(RelocInfo* rinfo);
 
   // 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