[Offline Pages] Generate MHTML header in 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 52 matching lines @@
     // should return null WebString if the frame doesn't have a content-id.
     virtual WebString GetContentID(WebFrame*) = 0;
 
     virtual WebFrameSerializerCacheControlPolicy CacheControlPolicy() = 0;
 
     virtual bool UseBinaryEncoding() = 0;
 
     virtual bool RemovePopupOverlay() = 0;
   };
 
-  // Generates and returns an MHTML header.
-  //
-  // Contents of the header (i.e. title and mime type) will be based
-  // on the frame passed as an argument (which typically should be
-  // the main, top-level frame).
-  //
-  // 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 GenerateMHTMLHeader(
-      const WebString& boundary,
-      WebLocalFrame*,
-      MHTMLPartsGenerationDelegate*);
-
   // Generates and returns MHTML parts for the given frame and the
   // 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).
+  // Same |boundary| needs to used for all generateMHTMLParts 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*);
 
   // IMPORTANT:
   // The API below is an older implementation of frame serialization that
   // will be removed soon.
 
   class LinkRewritingDelegate {
@@ skipping 40 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& base_target);
 };
 
 }  // namespace blink
 
 #endif