[DevTools] Added public method for async execution of scripts

Source/web/SuspendableScriptExecutor.h

+// Copyright 2014 The Chromium 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 SuspendableScriptExecutor_h
+#define SuspendableScriptExecutor_h
+
+#include "core/dom/ActiveDOMObject.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/Vector.h"
+
+namespace blink {
+
+class LocalFrame;
+class ScriptSourceCode;
+class WebScriptExecutionCallback;
+
+class SuspendableScriptExecutor final : public ActiveDOMObject {
+public:
+    SuspendableScriptExecutor(LocalFrame*, int worldID, const Vector<ScriptSourceCode>& sources, int extensionGroup, bool userGesture, WebScriptExecutionCallback*);
+    virtual ~SuspendableScriptExecutor();
+
+    // this method must be called only once
+    void run();
+
+    virtual void resume() override;
+
+    virtual void contextDestroyed() override;
+
+private:
+    void executeAndDestroySelf();
+
+    LocalFrame* m_frame;
+    int m_worldID;
+    Vector<ScriptSourceCode> m_sources;
+    int m_extensionGroup;
+    bool m_userGesture;
+    WebScriptExecutionCallback* m_callback;
+};
+
+} // namespace blink
+
+#endif // SuspendableScriptExecutor_h