Revert of More System Dialog printing code disabled on Windows.

chrome/browser/printing/print_view_manager_base.h

 // Copyright 2013 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_PRINT_VIEW_MANAGER_BASE_H_
 #define CHROME_BROWSER_PRINTING_PRINT_VIEW_MANAGER_BASE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/prefs/pref_member.h"
 #include "base/strings/string16.h"
@@ skipping 17 matching lines @@
 class PrintJobWorkerOwner;
 class PrintQueriesQueue;
 
 // Base class for managing the print commands for a WebContents.
 class PrintViewManagerBase : public content::NotificationObserver,
                              public PrintedPagesSource,
                              public content::WebContentsObserver {
  public:
   virtual ~PrintViewManagerBase();
 
-#if !defined(OS_WIN)
   // Prints the current document immediately. Since the rendering is
   // asynchronous, the actual printing will not be completed on the return of
   // this function. Returns false if printing is impossible at the moment.
   virtual bool PrintNow();
-#endif  // !OS_WIN
 
   // Whether to block scripted printing for our tab or not.
   void UpdateScriptedPrintingBlocked();
 
   // PrintedPagesSource implementation.
   virtual base::string16 RenderSourceName() OVERRIDE;
 
  protected:
   explicit PrintViewManagerBase(content::WebContents* web_contents);
 
@@ skipping 118 matching lines @@
   BooleanPrefMember printing_enabled_;
 
   scoped_refptr<printing::PrintQueriesQueue> queue_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintViewManagerBase);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_VIEW_MANAGER_BASE_H_