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

Source/core/inspector/PageDebuggerAgent.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 110 matching lines @@
     if (injectedScript.isEmpty())
         *errorString = "Execution context with given id not found.";
     return injectedScript;
 }
 
 void PageDebuggerAgent::setOverlayMessage(ErrorString*, const String* message)
 {
     m_overlay->setPausedInDebuggerMessage(message);
 }
 
-void PageDebuggerAgent::didClearWindowObjectInMainWorld(LocalFrame* frame)
+void PageDebuggerAgent::didClearDocumentOfWindowObject(LocalFrame* frame)
 {
     if (frame != m_pageAgent->mainFrame())
         return;
 
     reset();
 
     scriptDebugServer().setPreprocessorSource(String());
     ASSERT(m_pageAgent);
     if (!m_pageAgent->scriptPreprocessorSource().isEmpty())
         scriptDebugServer().setPreprocessorSource(m_pageAgent->scriptPreprocessorSource());
@@ skipping 15 matching lines @@
 
 void PageDebuggerAgent::didCommitLoad(LocalFrame* frame, DocumentLoader* loader)
 {
     LocalFrame* mainFrame = frame->page()->mainFrame();
     if (loader->frame() == mainFrame)
         pageDidCommitLoad();
 }
 
 } // namespace WebCore