Implement asynchronous interface/plumbing for GetDefaultPrintSettings.

ppapi/c/dev/ppb_printing_dev.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.
  */
 
-/* From dev/ppb_printing_dev.idl modified Wed Jun 13 09:16:33 2012. */
+/* From dev/ppb_printing_dev.idl modified Thu Jul 19 14:39:09 2012. */
 
 #ifndef PPAPI_C_DEV_PPB_PRINTING_DEV_H_
 #define PPAPI_C_DEV_PPB_PRINTING_DEV_H_
 
 #include "ppapi/c/dev/pp_print_settings_dev.h"
 #include "ppapi/c/pp_bool.h"
+#include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_point.h"
 #include "ppapi/c/pp_rect.h"
 #include "ppapi/c/pp_size.h"
 #include "ppapi/c/pp_stdint.h"
 
 #define PPB_PRINTING_DEV_INTERFACE_0_6 "PPB_Printing(Dev);0.6"
-#define PPB_PRINTING_DEV_INTERFACE PPB_PRINTING_DEV_INTERFACE_0_6
+#define PPB_PRINTING_DEV_INTERFACE_0_7 "PPB_Printing(Dev);0.7"
+#define PPB_PRINTING_DEV_INTERFACE PPB_PRINTING_DEV_INTERFACE_0_7
 
 /**
  * @file
  * Definition of the PPB_Printing interface.
  */
 
 
 /**
  * @addtogroup Interfaces
  * @{
  */
-struct PPB_Printing_Dev_0_6 {
+struct PPB_Printing_Dev_0_7 {
   /**
    * Outputs the default print settings for the default printer into
-   * <code>print_settings</code>. Returns <code>PP_FALSE</code> on error.
+   * <code>print_settings</code>. The completion callback is triggered when
+   * the settings have been copied into <code>print_settings</code>.
    */
+  int32_t (*GetDefaultPrintSettings)(
+      PP_Instance instance,
+      struct PP_PrintSettings_Dev* print_settings,
+      struct PP_CompletionCallback callback);
+};
+
+typedef struct PPB_Printing_Dev_0_7 PPB_Printing_Dev;
+
+struct PPB_Printing_Dev_0_6 {
   PP_Bool (*GetDefaultPrintSettings)(
       PP_Instance instance,
       struct PP_PrintSettings_Dev* print_settings);
 };
-
-typedef struct PPB_Printing_Dev_0_6 PPB_Printing_Dev;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_DEV_PPB_PRINTING_DEV_H_ */