[Offline Pages] Generate MHTML header in the browser process.

third_party/WebKit/Source/platform/mhtml/MHTMLArchive.h

 /*
  * 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 35 matching lines @@
 
 class PLATFORM_EXPORT MHTMLArchive final
     : public GarbageCollected<MHTMLArchive> {
  public:
   static MHTMLArchive* Create(const KURL&, PassRefPtr<const SharedBuffer>);
 
   // Binary encoding results in smaller MHTML files but they might not work in
   // other browsers.
   enum EncodingPolicy { kUseDefaultEncoding, kUseBinaryEncoding };
 
   // Generates an MHTML header and appends it to |outputBuffer|.

[carlosk, 2017/04/25 01:28:08]

Append "for testing purposes".

   //
   // Same |boundary| needs to be used for all generateMHTMLHeader and
   // generateMHTMLPart and generateMHTMLFooter calls that belong to the same
   // MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
-  static void GenerateMHTMLHeader(const String& boundary,
-                                  const String& title,
-                                  const String& mime_type,
-                                  Vector<char>& output_buffer);
+  static void GenerateMHTMLHeaderForTesting(const String& boundary,
+                                            const String& title,
+                                            const String& mime_type,
+                                            Vector<char>& output_buffer);
 
   // Serializes SerializedResource as an MHTML part and appends it in
   // |outputBuffer|.
   //
   // Same |boundary| needs to be used for all generateMHTMLHeader and
   // generateMHTMLPart and generateMHTMLFooter calls that belong to the same
   // MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
   //
   // If |contentID| is non-empty, then it will be used as a Content-ID header.
   // See rfc2557 - section 8.3 - "Use of the Content-ID header and CID URLs".
@@ skipping 26 matching lines @@
   void AddSubresource(ArchiveResource*);
   static bool CanLoadArchive(const KURL&);
 
   Member<ArchiveResource> main_resource_;
   SubArchiveResources subresources_;
 };
 
 }  // namespace blink
 
 #endif