Clarify when what notifications are send when a window object is cleared

Source/core/inspector/PageRuntimeAgent.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 59 matching lines @@
 
     InspectorRuntimeAgent::enable(errorString);
 
     // Only report existing contexts if the page did commit load, otherwise we may
     // unintentionally initialize contexts in the frames which may trigger some listeners
     // that are expected to be triggered only after the load is committed, see http://crbug.com/131623
     if (m_mainWorldContextCreated)
         reportExecutionContextCreation();
 }
 
-void PageRuntimeAgent::didClearWindowObjectInMainWorld(LocalFrame* frame)
+void PageRuntimeAgent::didClearDocumentOfWindowObject(LocalFrame* frame)
 {
     m_mainWorldContextCreated = true;
 
     if (!m_enabled)
         return;
     ASSERT(m_frontend);
 
     if (frame == m_inspectedPage->mainFrame()) {
         m_scriptStateToId.clear();
         m_frontend->executionContextsCleared();
@@ skipping 63 matching lines @@
         if (scriptState->contextIsEmpty() || window == scriptState->domWindow()) {
             scriptStatesToRemove.append(scriptState);
             m_frontend->executionContextDestroyed(it->value);
         }
     }
     m_scriptStateToId.removeAll(scriptStatesToRemove);
 }
 
 } // namespace WebCore