Refactoring: Extract DocumentInit for capture Document construction parameter.

Source/core/html/MediaDocument.cpp

 /*
  * Copyright (C) 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 99 matching lines @@
 size_t MediaDocumentParser::appendBytes(const char*, size_t)
 {
     if (m_didBuildDocumentStructure)
         return 0;
 
     createDocumentStructure();
     finish();
     return 0;
 }
 
-MediaDocument::MediaDocument(Frame* frame, const KURL& url)
-    : HTMLDocument(frame, url, MediaDocumentClass)
+MediaDocument::MediaDocument(const DocumentInit& initializer)
+    : HTMLDocument(initializer, MediaDocumentClass)
 {
     setCompatibilityMode(QuirksMode);
     lockCompatibilityMode();
 }
 
 PassRefPtr<DocumentParser> MediaDocument::createParser()
 {
     return MediaDocumentParser::create(this);
 }
 
@@ skipping 27 matching lines @@
                 if (video->canPlay())
                     video->play();
             } else
                 video->pause();
             event->setDefaultHandled();
         }
     }
 }
 
 }