Merge 153342 - Print preview: Use an ID instead of memory pointer string in WebUI.

chrome/browser/ui/webui/print_preview/print_preview_data_source.h

 // Copyright (c) 2012 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_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_DATA_SOURCE_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_DATA_SOURCE_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
 #include "chrome/browser/ui/webui/chrome_web_ui_data_source.h"
 
 // PrintPreviewDataSource serves data for chrome://print requests.
 //
 // The format for requesting PDF data is as follows:
-// chrome://print/<PrintPreviewUIAddrStr>/<PageIndex>/print.pdf
+// chrome://print/<PrintPreviewUIID>/<PageIndex>/print.pdf
 //
 // Parameters (< > required):
-//    <PrintPreviewUIAddrStr> = Print preview UI identifier.
+//    <PrintPreviewUIID> = PrintPreview UI ID
 //    <PageIndex> = Page index is zero-based or
 //                  |printing::COMPLETE_PREVIEW_DOCUMENT_INDEX| to represent
 //                  a print ready PDF.
 //
 // Example:
-//    chrome://print/0xab0123ef/10/print.pdf
+//    chrome://print/123/10/print.pdf
 //
 // Requests to chrome://print with paths not ending in /print.pdf are used
 // to return the markup or other resources for the print preview page itself.
 class PrintPreviewDataSource : public ChromeWebUIDataSource {
  public:
   PrintPreviewDataSource();
 
   // ChromeURLDataManager::DataSource implementation.
   virtual void StartDataRequest(const std::string& path,
                                 bool is_incognito,
                                 int request_id) OVERRIDE;
+
  private:
   virtual ~PrintPreviewDataSource();
   void Init();
 
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewDataSource);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_DATA_SOURCE_H_