[debugger] separate break point info from code instrumentation.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index b6ec9a2ac665ea2d2dc8f09d427d4b371bf6f3ce..7d426a045eb9b2584e22e207ee0607ca39191e7a 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -1036,7 +1036,7 @@ void NormalizedMapCache::NormalizedMapCacheVerify() {
 void DebugInfo::DebugInfoVerify() {
   CHECK(IsDebugInfo());
   VerifyPointer(shared());
-  VerifyPointer(abstract_code());
+  VerifyPointer(debug_bytecode_array());
   VerifyPointer(break_points());
 }