DevTools: clear pending script to evaluate on load upon page agent being disabled

Source/core/inspector/InspectorPageAgent.cpp

 /*
  * Copyright (C) 2011 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 409 matching lines @@
         return;
     m_inspectorResourceContentLoader->dispose();
     m_inspectorResourceContentLoader.clear();
 }
 
 void InspectorPageAgent::disable(ErrorString*)
 {
     m_enabled = false;
     m_state->setBoolean(PageAgentState::pageAgentEnabled, false);
     m_state->remove(PageAgentState::pageAgentScriptsToEvaluateOnLoad);
+    m_scriptToEvaluateOnLoadOnce = String();
+    m_pendingScriptToEvaluateOnLoadOnce = String();
     m_instrumentingAgents->setInspectorPageAgent(0);
     if (m_inspectorResourceContentLoader) {
         m_inspectorResourceContentLoader->dispose();
         m_inspectorResourceContentLoader.clear();
     }
 
     setShowViewportSizeOnResize(0, false, 0);
     stopScreencast(0);
 
     finishReload();
@@ skipping 448 matching lines @@
 {
     visitor->trace(m_inspectedFrame);
     visitor->trace(m_debuggerAgent);
     visitor->trace(m_cssAgent);
     visitor->trace(m_overlay);
     visitor->trace(m_inspectorResourceContentLoader);
     InspectorBaseAgent::trace(visitor);
 }
 
 } // namespace blink