[inspector] implemented blackboxing inside v8

src/inspector/v8-debugger.h

Index: src/inspector/v8-debugger.h
diff --git a/src/inspector/v8-debugger.h b/src/inspector/v8-debugger.h
index 1f327c67d1f566ebbfc206ba576ab25d07250673..58992a6c5d904e1fc75186395442300701732f1a 100644
--- a/src/inspector/v8-debugger.h
+++ b/src/inspector/v8-debugger.h
@@ -43,12 +43,12 @@ class V8Debugger : public v8::debug::DebugEventListener {
   void setPauseOnExceptionsState(v8::debug::ExceptionBreakState);
   void setPauseOnNextStatement(bool);
   bool canBreakProgram();
+  bool hasUserFrameOnStack();
   void breakProgram();
   void continueProgram();
   void stepIntoStatement();
   void stepOverStatement();
   void stepOutOfFunction();
-  void clearStepping();
 
   Response setScriptSource(
       const String16& sourceID, v8::Local<v8::String> newSource, bool dryRun,
@@ -113,6 +113,11 @@ class V8Debugger : public v8::debug::DebugEventListener {
                           bool isPromiseRejection = false,
                           bool isUncaught = false);
 
+  static bool v8IsBlackboxedCallback(v8::Local<v8::debug::Script> script,
+                                     const v8::debug::Location& start,
+                                     const v8::debug::Location& end,
+                                     void* data);
+
   v8::Local<v8::Value> collectionEntries(v8::Local<v8::Context>,
                                          v8::Local<v8::Object>);
   v8::Local<v8::Value> generatorObjectLocation(v8::Local<v8::Context>,