Print Preview: Get printer info with capabilities.

chrome/browser/ui/webui/print_preview/print_preview_handler.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_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_HANDLER_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 191 matching lines @@
   // |arg| contains the ID of the printer whose capabilities are requested.
   void HandleGetExtensionPrinterCapabilities(const base::ListValue* args);
 
   void SendInitialSettings(const std::string& default_printer);
 
   // Send OAuth2 access token.
   void SendAccessToken(const std::string& type,
                        const std::string& access_token);
 
   // Sends the printer capabilities to the Web UI. |settings_info| contains
-  // printer capabilities information.
-  void SendPrinterCapabilities(const base::DictionaryValue* settings_info);
-
-  // Sends error notification to the Web UI when unable to return the printer
-  // capabilities.
-  void SendFailedToGetPrinterCapabilities(const std::string& printer_name);
+  // printer capabilities information. If |settings_info| is empty, sends
+  // error notification to the Web UI instead.
+  void SendPrinterCapabilities(
+      const std::string& printer_name,
+      std::unique_ptr<base::DictionaryValue> settings_info);
 
   // Send the list of printers to the Web UI.
   void SetupPrinterList(const base::ListValue* printers);
 
   // Send whether cloud print integration should be enabled.
   void SendCloudPrintEnabled();
 
   // Send the PDF data to the cloud to print.
   void SendCloudPrintJob(const base::RefCountedBytes* data);
 
@@ skipping 158 matching lines @@
   // A print preview that is responsible for rendering the page after
   // being processed by the DOM Distiller.
   std::unique_ptr<PrintPreviewDistiller> print_preview_distiller_;
 
   base::WeakPtrFactory<PrintPreviewHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_HANDLER_H_