Convert //printing to use std::unique_ptr

printing/backend/win_helper.h

Index: printing/backend/win_helper.h
diff --git a/printing/backend/win_helper.h b/printing/backend/win_helper.h
index fa39a0367f7bfc4fbe92a9de88867ff69d82e283..05e0fe97c78066159da8e1f6ce22227c1506307a 100644
--- a/printing/backend/win_helper.h
+++ b/printing/backend/win_helper.h
@@ -10,11 +10,11 @@
 #include <winspool.h>
 #include <xpsprint.h>
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/free_deleter.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/win/scoped_handle.h"
 #include "printing/printing_export.h"
@@ -172,24 +172,24 @@ PRINTING_EXPORT bool InitBasicPrinterInfo(HANDLE printer,
 
 PRINTING_EXPORT std::string GetDriverInfo(HANDLE printer);
 
-PRINTING_EXPORT scoped_ptr<DEVMODE, base::FreeDeleter> XpsTicketToDevMode(
+PRINTING_EXPORT std::unique_ptr<DEVMODE, base::FreeDeleter> XpsTicketToDevMode(
     const base::string16& printer_name,
     const std::string& print_ticket);
 
 // Creates default DEVMODE and sets color option. Some devices need special
 // workaround for color.
-PRINTING_EXPORT scoped_ptr<DEVMODE, base::FreeDeleter> CreateDevModeWithColor(
-    HANDLE printer,
-    const base::string16& printer_name,
-    bool color);
+PRINTING_EXPORT std::unique_ptr<DEVMODE, base::FreeDeleter>
+CreateDevModeWithColor(HANDLE printer,
+                       const base::string16& printer_name,
+                       bool color);
 
 // Creates new DEVMODE. If |in| is not NULL copy settings from there.
-PRINTING_EXPORT scoped_ptr<DEVMODE, base::FreeDeleter> CreateDevMode(
+PRINTING_EXPORT std::unique_ptr<DEVMODE, base::FreeDeleter> CreateDevMode(
     HANDLE printer,
     DEVMODE* in);
 
 // Prompts for new DEVMODE. If |in| is not NULL copy settings from there.
-PRINTING_EXPORT scoped_ptr<DEVMODE, base::FreeDeleter> PromptDevMode(
+PRINTING_EXPORT std::unique_ptr<DEVMODE, base::FreeDeleter> PromptDevMode(
     HANDLE printer,
     const base::string16& printer_name,
     DEVMODE* in,