Remove black magic and >100 lines. Unhook a lot of dead code.

chrome/browser/printing/printed_pages_source.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_PRINTING_PRINTED_PAGES_SOURCE_H__
 #define CHROME_BROWSER_PRINTING_PRINTED_PAGES_SOURCE_H__
 
 #include <string>
 
 class GURL;
 class MessageLoop;
 
 namespace printing {
 
 class PrintedDocument;
 
 // Source of printed pages.
 class PrintedPagesSource {
  public:
-  // Renders a printed page. It is not necessary to be synchronous. It must call
-  // document->SetPage() once the source is done rendering the requested page.
-  virtual void RenderOnePrintedPage(PrintedDocument* document,
-                                    int page_number) = 0;
-
   // Returns the document title.
   virtual std::wstring RenderSourceName() = 0;
 
   // Returns the URL's source of the document if applicable.
   virtual GURL RenderSourceUrl() = 0;
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINTED_PAGES_SOURCE_H__