Support audio output device enumeration and selection in PPAPI

ppapi/c/dev/ppb_device_ref_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_device_ref_dev.idl modified Wed Nov 07 13:28:37 2012. */
+/* From dev/ppb_device_ref_dev.idl modified Mon Jan 09 12:04:09 2017. */
 
 #ifndef PPAPI_C_DEV_PPB_DEVICE_REF_DEV_H_
 #define PPAPI_C_DEV_PPB_DEVICE_REF_DEV_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_var.h"
 
@@ skipping 31 matching lines @@
 /**
  * @addtogroup Enums
  * @{
  */
 /**
  * Device types.
  */
 typedef enum {
   PP_DEVICETYPE_DEV_INVALID = 0,
   PP_DEVICETYPE_DEV_AUDIOCAPTURE = 1,
-  PP_DEVICETYPE_DEV_VIDEOCAPTURE = 2
+  PP_DEVICETYPE_DEV_VIDEOCAPTURE = 2,
+  PP_DEVICETYPE_DEV_AUDIOOUTPUT = 3
 } PP_DeviceType_Dev;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_DeviceType_Dev, 4);
 /**
  * @}
  */
 
 /**
  * @addtogroup Interfaces
  * @{
  */
@@ skipping 30 matching lines @@
   struct PP_Var (*GetName)(PP_Resource device_ref);
 };
 
 typedef struct PPB_DeviceRef_Dev_0_1 PPB_DeviceRef_Dev;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_DEV_PPB_DEVICE_REF_DEV_H_ */