Allow printerProvider API services in incognito

extensions/browser/api/printer_provider/printer_provider_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_PRINTER_PROVIDER_API_H_
 #define EXTENSIONS_BROWSER_API_PRINTER_PROVIDER_PRINTER_PROVIDER_API_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 191 matching lines @@
     // Completes the request with the provided request id. It runs the request
     // callback and removes the request from the set.
     bool Complete(int request_id, PrintError result);
 
    private:
     int last_request_id_;
     std::map<int, PrintCallback> pending_requests_;
   };
 
   // BrowserContextKeyedAPI implementation.
+  static const bool kServiceRedirectedInIncognito = true;
   static const char* service_name() { return "PrinterProvider"; }
 
   // PrinterProviderInternalAPIObserver implementation:
   void OnGetPrintersResult(
       const Extension* extension,
       int request_id,
       const PrinterProviderInternalAPIObserver::PrinterInfoVector& result)
       override;
   void OnGetCapabilityResult(const Extension* extension,
                              int request_id,
@@ skipping 28 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(PrinterProviderAPI);
 };
 
 template <>
 void BrowserContextKeyedAPIFactory<
     PrinterProviderAPI>::DeclareFactoryDependencies();
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_PRINTER_PROVIDER_PRINTER_PROVIDER_API_H_