DevTools: use v8::Isolate::RequestInterrupt instead of v8::Debug::DebugBreakForCommand

Source/bindings/core/v8/ScriptDebugServer.h

 /*
  * Copyright (c) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 123 matching lines @@
 
     void dispatchDidParseSource(ScriptDebugListener*, v8::Local<v8::Object> sourceObject, CompileResult);
 
     void ensureDebuggerScriptCompiled();
     void discardDebuggerScript();
     v8::Local<v8::Object> debuggerScriptLocal() const;
 
     v8::Isolate* m_isolate;
 
 private:
+    static void v8InterruptCallback(v8::Isolate*, void*);
     static void v8DebugEventCallback(const v8::Debug::EventDetails&);
     void handleV8DebugEvent(const v8::Debug::EventDetails&);
 
     v8::Local<v8::String> v8InternalizedString(const char*) const;
 
     enum ScopeInfoDetails {
         AllScopes,
         FastAsyncScopes,
         NoScopes // Should be the last option.
     };
     ScriptValue currentCallFramesInner(ScopeInfoDetails);
     PassRefPtrWillBeRawPtr<JavaScriptCallFrame> wrapCallFrames(int maximumLimit, ScopeInfoDetails);
     void handleV8AsyncTaskEvent(ScriptDebugListener*, ScriptState* pausedScriptState, v8::Local<v8::Object> executionState, v8::Local<v8::Object> eventData);
     void handleV8PromiseEvent(ScriptDebugListener*, ScriptState* pausedScriptState, v8::Local<v8::Object> executionState, v8::Local<v8::Object> eventData);
 
     bool m_breakpointsActivated;
     V8PersistentValueMap<String, v8::Script, false> m_compiledScripts;
     v8::UniquePersistent<v8::FunctionTemplate> m_breakProgramCallbackTemplate;
     v8::UniquePersistent<v8::Object> m_debuggerScript;
     v8::Local<v8::Object> m_executionState;
     RefPtr<ScriptState> m_pausedScriptState;
     bool m_runningNestedMessageLoop;
+    class ThreadSafeTaskQueue;
+    OwnPtr<ThreadSafeTaskQueue> m_taskQueue;
 };
 
 } // namespace blink
 
 
 #endif // ScriptDebugServer_h