[inspector] Return error when paused in different context group

src/inspector/v8-debugger.cc

Index: src/inspector/v8-debugger.cc
diff --git a/src/inspector/v8-debugger.cc b/src/inspector/v8-debugger.cc
index ddf78f5f8f6ef25911a83b72c8be0449218f3611..49e654cf91a58d1318fc6ebe11ccd4dd1738c430 100644
--- a/src/inspector/v8-debugger.cc
+++ b/src/inspector/v8-debugger.cc
@@ -198,6 +198,10 @@ void V8Debugger::disable() {
   m_isolate->RestoreOriginalHeapLimit();
 }
 
+bool V8Debugger::isPausedInContextGroup(int contextGroupId) const {
+  return isPaused() && m_pausedContextGroupId == contextGroupId;
+}
+
 bool V8Debugger::enabled() const { return !m_debuggerScript.IsEmpty(); }
 
 void V8Debugger::getCompiledScripts(