[inspector] implemented blackboxing inside v8

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 9301387c76102a9ee87b5aed821278f12efa583b..a8f3e0a7b23fb2fd586f69d86d0290dbe00fef2c 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7338,6 +7338,9 @@ class SharedFunctionInfo: public HeapObject {
   // The function's name if it is non-empty, otherwise the inferred name.
   String* DebugName();
 
+  // The function is blackboxed in debugger.
+  bool DebugIsBlackboxed();
+
   // The function cannot cause any side effects.
   bool HasNoSideEffect();
 
@@ -7453,6 +7456,12 @@ class SharedFunctionInfo: public HeapObject {
   // Indicates that |has_no_side_effect| has been computed and set.
   DECL_BOOLEAN_ACCESSORS(computed_has_no_side_effect)
 
+  // Indicates that the function should be skipped during stepping.
+  DECL_BOOLEAN_ACCESSORS(debug_is_blackboxed)
+
+  // Indicates that |debug_is_blackboxed| has been computed and set.
+  DECL_BOOLEAN_ACCESSORS(computed_debug_is_blackboxed)
+
   inline FunctionKind kind() const;
   inline void set_kind(FunctionKind kind);
 
@@ -7742,6 +7751,8 @@ class SharedFunctionInfo: public HeapObject {
     kIsAsmWasmBroken,
     kHasNoSideEffect,
     kComputedHasNoSideEffect,
+    kDebugIsBlackboxed,
+    kComputedDebugIsBlackboxed,
     kCompilerHintsCount,  // Pseudo entry
   };
   // kFunctionKind has to be byte-aligned