Move the writing of the MHTML footer to the browser process.

third_party/WebKit/public/web/WebFrameSerializer.h

 /*
  * Copyright (C) 2009 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 77 matching lines @@
   // savable resources underneath.
   //
   // Same |boundary| needs to used for all generateMHTMLHeader and
   // generateMHTMLParts and generateMHTMLFooter calls that belong to the same
   // MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
   BLINK_EXPORT static WebThreadSafeData generateMHTMLParts(
       const WebString& boundary,
       WebLocalFrame*,
       MHTMLPartsGenerationDelegate*);
 
-  // Generates and returns an MHTML footer.
-  //
-  // Same |boundary| needs to used for all generateMHTMLHeader and
-  // generateMHTMLParts and generateMHTMLFooter calls that belong to the same
-  // MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
-  BLINK_EXPORT static WebThreadSafeData generateMHTMLFooter(
-      const WebString& boundary);
-
   // IMPORTANT:
   // The API below is an older implementation of frame serialization that
   // will be removed soon.
 
   class LinkRewritingDelegate {
    public:
     // Method allowing the delegate control which URLs are written into the
     // generated html document.
     //
     // When URL of the given frame needs to be rewritten, this method should
@@ skipping 35 matching lines @@
   // Generate the MOTW declaration.
   BLINK_EXPORT static WebString generateMarkOfTheWebDeclaration(const WebURL&);
   // Generate the default base tag declaration.
   BLINK_EXPORT static WebString generateBaseTagDeclaration(
       const WebString& baseTarget);
 };
 
 }  // namespace blink
 
 #endif