[heap] Add support for code data to concurrent marker.

R=ulan@chromium.org

Change-Id: I1ce0dbe909ffe3da784d5196e1c1d89f322f05c3
Reviewed-on: https://chromium-review.googlesource.com/739321Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48973}

src/heap/concurrent-marking.cc

@@ -203,11 +203,6 @@ class ConcurrentMarkingVisitor final
     return 0;
   }
 
-  int VisitCodeDataContainer(Map* map, CodeDataContainer* object) {
-    bailout_.Push(object);
-    return 0;
-  }
-
   // ===========================================================================
   // Objects with weak fields and/or side-effectiful visitation.
   // ===========================================================================
@@ -229,6 +224,14 @@ class ConcurrentMarkingVisitor final
     return size;
   }
 
+  int VisitCodeDataContainer(Map* map, CodeDataContainer* object) {
+    if (!ShouldVisit(object)) return 0;
+    int size = CodeDataContainer::BodyDescriptorWeak::SizeOf(map, object);
+    VisitMapPointer(object, object->map_slot());
+    CodeDataContainer::BodyDescriptorWeak::IterateBody(object, size, this);
+    return size;
+  }
+
   int VisitJSFunction(Map* map, JSFunction* object) {
     if (!ShouldVisit(object)) return 0;
     int size = JSFunction::BodyDescriptorWeak::SizeOf(map, object);