Add printing.dll to the component build.

printing/page_number.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 PRINTING_PAGE_NUMBER_H_
 #define PRINTING_PAGE_NUMBER_H_
 
 #include <ostream>
 
 #include "printing/page_range.h"
 
 namespace printing {
 
 class PrintSettings;
 
 // Represents a page series following the array of page ranges defined in a
 // PrintSettings.
-class PageNumber {
+class PRINTING_EXPORT PageNumber {
  public:
   // Initializes the page to the first page in the settings's range or 0.
   PageNumber(const PrintSettings& settings, int document_page_count);
 
   PageNumber();
 
   void operator=(const PageNumber& other);
 
   // Initializes the page to the first page in the setting's range or 0. It
   // initialize to npos if the range is empty and document_page_count is 0.
@@ skipping 35 matching lines @@
 // Debug output support.
 template<class E, class T>
 inline typename std::basic_ostream<E,T>& operator<<(
     typename std::basic_ostream<E,T>& ss, const PageNumber& page) {
   return ss << page.ToInt();
 }
 
 }  // namespace printing
 
 #endif  // PRINTING_PAGE_NUMBER_H_