[debugger] separate break point info from code instrumentation.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 4706d03398d76bbefae18cdf98d5cf51973a8017..bc21f8eef5821477a0a6eb601642ace7decfeab9 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -5811,13 +5811,35 @@ void Script::set_origin_options(ScriptOriginOptions origin_options) {
 
 
 ACCESSORS(DebugInfo, shared, SharedFunctionInfo, kSharedFunctionInfoIndex)
-ACCESSORS(DebugInfo, abstract_code, AbstractCode, kAbstractCodeIndex)
+ACCESSORS(DebugInfo, debug_bytecode_array, Object, kDebugBytecodeArrayIndex)
 ACCESSORS(DebugInfo, break_points, FixedArray, kBreakPointsStateIndex)
 
-BytecodeArray* DebugInfo::original_bytecode_array() {
+bool DebugInfo::HasDebugBytecodeArray() {
+  return debug_bytecode_array()->IsBytecodeArray();
+}
+
+bool DebugInfo::HasDebugCode() {
+  Code* code = shared()->code();
+  bool has = code->kind() == Code::FUNCTION;
+  DCHECK(!has || code->has_debug_break_slots());
+  return has;
+}
+
+BytecodeArray* DebugInfo::OriginalBytecodeArray() {
+  DCHECK(HasDebugBytecodeArray());
   return shared()->bytecode_array();
 }
 
+BytecodeArray* DebugInfo::DebugBytecodeArray() {
+  DCHECK(HasDebugBytecodeArray());
+  return BytecodeArray::cast(debug_bytecode_array());
+}
+
+Code* DebugInfo::DebugCode() {
+  DCHECK(HasDebugCode());
+  return shared()->code();
+}
+
 SMI_ACCESSORS(BreakPointInfo, source_position, kSourcePositionIndex)
 ACCESSORS(BreakPointInfo, break_point_objects, Object, kBreakPointObjectsIndex)