[Offline Pages] Adding missing image/CSS detection in FrameSerializer.

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 50 matching lines @@
     // Format note - the returned string should be of the form "<foo@bar.com>"
     // (i.e. the strings should include the angle brackets).  The method
     // 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;
+
+    virtual bool UsePageProblemDetectors() = 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
@@ skipping 62 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