Add onGetUsbPrinterInfoRequested event to printerProvider API.

extensions/browser/api/printer_provider_internal/printer_provider_internal_api.h

 // Copyright 2015 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 EXTENSIONS_BROWSER_API_PRINTER_PROVIDER_INTERNAL_PRINTER_PROVIDER_INTERNAL_API_H_
 #define EXTENSIONS_BROWSER_API_PRINTER_PROVIDER_INTERNAL_PRINTER_PROVIDER_INTERNAL_API_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 30 matching lines @@
   ~PrinterProviderInternalAPI() override;
 
   void AddObserver(PrinterProviderInternalAPIObserver* observer);
   void RemoveObserver(PrinterProviderInternalAPIObserver* observer);
 
  private:
   friend class BrowserContextKeyedAPIFactory<PrinterProviderInternalAPI>;
   friend class PrinterProviderInternalReportPrintersFunction;
   friend class PrinterProviderInternalReportPrinterCapabilityFunction;
   friend class PrinterProviderInternalReportPrintResultFunction;
+  friend class PrinterProviderInternalReportUsbPrinterInfoFunction;
 
   // BrowserContextKeyedAPI implementation.
   static const bool kServiceRedirectedInIncognito = true;
   static const char* service_name() { return "PrinterProviderInternal"; }
 
   // Notifies observers that a printerProvider.onGetPrintersRequested callback
   // has been called. Called from
   // |PrinterProviderInternalReportPrintersFunction|.
   void NotifyGetPrintersResult(
       const Extension* extension,
       int request_id,
       const PrinterProviderInternalAPIObserver::PrinterInfoVector& printers);
 
   // Notifies observers that a printerProvider.onGetCapabilityRequested callback
   // has been called. Called from
   // |PrinterProviderInternalReportPrinterCapabilityFunction|.
   void NotifyGetCapabilityResult(const Extension* extension,
                                  int request_id,
                                  const base::DictionaryValue& capability);
 
   // Notifies observers that a printerProvider.onPrintRequested callback has
   // been called. Called from
   // |PrinterProviderInternalReportPrintResultFunction|.
   void NotifyPrintResult(const Extension* extension,
                          int request_id,
                          core_api::printer_provider_internal::PrintError error);
 
+  // Notifies observers that a printerProvider.onGetUsbPrinterInfoRequested
+  // callback has been called. Called from
+  // |PrinterProviderInternalReportUsbPrinterInfoFunction|.
+  void NotifyGetUsbPrinterInfoResult(
+      const Extension* extension,
+      int request_id,
+      const core_api::printer_provider::PrinterInfo* printer_info);
+
   ObserverList<PrinterProviderInternalAPIObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(PrinterProviderInternalAPI);
 };
 
 class PrinterProviderInternalReportPrintResultFunction
     : public UIThreadExtensionFunction {
  public:
   PrinterProviderInternalReportPrintResultFunction();
 
@@ skipping 56 matching lines @@
   void OnBlob(const std::string& type,
               int size,
               const scoped_refptr<base::RefCountedMemory>& data,
               scoped_ptr<content::BlobHandle> blob);
   DECLARE_EXTENSION_FUNCTION("printerProviderInternal.getPrintData",
                              PRINTERPROVIDERINTERNAL_GETPRINTDATA)
 
   DISALLOW_COPY_AND_ASSIGN(PrinterProviderInternalGetPrintDataFunction);
 };
 
+class PrinterProviderInternalReportUsbPrinterInfoFunction
+    : public UIThreadExtensionFunction {
+ public:
+  PrinterProviderInternalReportUsbPrinterInfoFunction();
+
+ protected:
+  ~PrinterProviderInternalReportUsbPrinterInfoFunction() override;
+  ExtensionFunction::ResponseAction Run() override;
+
+ private:
+  DECLARE_EXTENSION_FUNCTION("printerProviderInternal.reportUsbPrinterInfo",
+                             PRINTERPROVIDERINTERNAL_REPORTUSBPRINTERINFO)
+
+  DISALLOW_COPY_AND_ASSIGN(PrinterProviderInternalReportUsbPrinterInfoFunction);
+};
+
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_PRINTER_PROVIDER_INTERNAL_PRINTER_PROVIDER_INTERNAL_API_H_