Add Print Selection support to Chrome. This change is fairly involved since ...

chrome/browser/printing/printed_document.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_DOCUMENT_H__
 #define CHROME_BROWSER_PRINTING_PRINTED_DOCUMENT_H__
 
 #include <map>
 
 #include "base/lock.h"
@@ skipping 45 matching lines @@
   // Draws the page in the context. If the page is not available right now, it
   // requests to have this page be rendered and returns false.
   // Note: locks for a short amount of time.
   bool RenderPrintedPageNumber(int page_number, HDC context);
 
   // Returns true if all the necessary pages for the settings are already
   // rendered.
   // Note: locks while parsing the whole tree.
   bool IsComplete() const;
 
-  // Requests all the missing pages. Returns true if at least one page has been
-  // requested. Returns false if there was not enough information to request the
-  // missing pages, i.e. document_page_count_ is not initialized or no page has
-  // been requested.
-  // Note: locks while parsing the whole tree.
-  bool RequestMissingPages();
-
   // Disconnects the PrintedPage source (PrintedPagesSource). It is done when
   // the source is being destroyed.
   void DisconnectSource();
 
   // Retrieves the current memory usage of the renderer pages.
   // Note: locks for a short amount of time.
   size_t MemoryUsage() const;
 
   // Sets the number of pages in the document to be rendered. Can only be set
   // once.
@@ skipping 83 matching lines @@
   };
 
   // Prints the headers and footers for one page in the specified context
   // according to the current settings.
   void PrintHeaderFooter(HDC context,
                          const PrintedPage& page,
                          PageOverlays::HorizontalPosition x,
                          PageOverlays::VerticalPosition y,
                          const gfx::Font& font) const;
 
-  // Calls the render source to render a page. Makes sure to execute the call in
-  // the right thread context.
-  void PrintPage_ThreadJump(int page_number);
-
   // All writable data member access must be guarded by this lock. Needs to be
   // mutable since it can be acquired from const member functions.
   mutable Lock lock_;
 
   // All the mutable members.
   Mutable mutable_;
 
   // All the immutable members.
   const Immutable immutable_;
 
   DISALLOW_EVIL_CONSTRUCTORS(PrintedDocument);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINTED_DOCUMENT_H__