[inspector] Return error when paused in different context group

src/inspector/v8-debugger.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_INSPECTOR_V8DEBUGGER_H_
 #define V8_INSPECTOR_V8DEBUGGER_H_
 
 #include <list>
 #include <vector>
 
@@ skipping 65 matching lines @@
   // Each script inherits debug data from v8::Context where it has been
   // compiled.
   // Only scripts whose debug data matches |contextGroupId| will be reported.
   // Passing 0 will result in reporting all scripts.
   void getCompiledScripts(int contextGroupId,
                           std::vector<std::unique_ptr<V8DebuggerScript>>&);
   void enable();
   void disable();
 
   bool isPaused() const { return m_pausedContextGroupId; }
+  bool isPausedInContextGroup(int contextGroupId) const;
   v8::Local<v8::Context> pausedContext() { return m_pausedContext; }
 
   int maxAsyncCallChainDepth() { return m_maxAsyncCallStackDepth; }
   void setAsyncCallStackDepth(V8DebuggerAgentImpl*, int);
 
   std::shared_ptr<AsyncStackTrace> currentAsyncParent();
   std::shared_ptr<AsyncStackTrace> currentAsyncCreation();
 
   std::shared_ptr<StackFrame> symbolize(v8::Local<v8::StackFrame> v8Frame);
 
@@ skipping 130 matching lines @@
   v8::debug::ExceptionBreakState m_pauseOnExceptionsState;
 
   WasmTranslation m_wasmTranslation;
 
   DISALLOW_COPY_AND_ASSIGN(V8Debugger);
 };
 
 }  // namespace v8_inspector
 
 #endif  // V8_INSPECTOR_V8DEBUGGER_H_