Add Promises for EME (Chromium side)

ppapi/c/private/pp_content_decryptor.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 private/pp_content_decryptor.idl modified Wed Apr  9 10:36:52 2014. */
+/* From private/pp_content_decryptor.idl modified Thu May  1 10:35:03 2014. */
 
 #ifndef PPAPI_C_PRIVATE_PP_CONTENT_DECRYPTOR_H_
 #define PPAPI_C_PRIVATE_PP_CONTENT_DECRYPTOR_H_
 
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_stdint.h"
 
 /**
  * @file
  * The <code>PP_DecryptTrackingInfo</code> struct contains necessary information
@@ skipping 425 matching lines @@
  * @{
  */
 /**
  * <code>PP_DecryptorStreamType</code> contains stream type constants.
  */
 typedef enum {
   PP_DECRYPTORSTREAMTYPE_AUDIO = 0,
   PP_DECRYPTORSTREAMTYPE_VIDEO = 1
 } PP_DecryptorStreamType;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_DecryptorStreamType, 4);
+
+/**
+ * <code>PP_SessionType</code> contains session type constants.
+ */
+typedef enum {
+  PP_SESSIONTYPE_TEMPORARY = 0,
+  PP_SESSIONTYPE_PERSISTENT = 1
+} PP_SessionType;
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_SessionType, 4);
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PRIVATE_PP_CONTENT_DECRYPTOR_H_ */