[debugger] introduce abstract interface for break location.

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 09a473c3f1265f8d0020984d87a65726fe2b6938..1a3a007a8536c7b3188affcca5c6fb115c60998a 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -2249,7 +2249,11 @@ Handle<DebugInfo> Factory::NewDebugInfo(Handle<SharedFunctionInfo> shared) {
   Handle<DebugInfo> debug_info =
       Handle<DebugInfo>::cast(NewStruct(DEBUG_INFO_TYPE));
   debug_info->set_shared(*shared);
-  debug_info->set_code(shared->code());
+  if (shared->HasBytecodeArray()) {
+    debug_info->set_abstract_code(AbstractCode::cast(shared->bytecode_array()));
+  } else {
+    debug_info->set_abstract_code(AbstractCode::cast(shared->code()));
+  }
   debug_info->set_break_points(*break_points);
 
   // Link debug info to function.