Add 'cbcs' encryption scheme support in Android media.

media/base/ipc/media_param_traits.h

 // Copyright 2016 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 MEDIA_BASE_IPC_MEDIA_PARAM_TRAITS_H_
 #define MEDIA_BASE_IPC_MEDIA_PARAM_TRAITS_H_
 
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_param_traits.h"
 #include "media/base/ipc/media_param_traits_macros.h"
 
 namespace media {
 class AudioParameters;
+class EncryptionScheme;
 }
 
 namespace IPC {
 
 template <>
 struct ParamTraits<media::AudioParameters> {
   typedef media::AudioParameters param_type;
   static void GetSize(base::PickleSizer* s, const param_type& p);
   static void Write(base::Pickle* m, const param_type& p);
   static bool Read(const base::Pickle* m,
                    base::PickleIterator* iter,
                    param_type* r);
   static void Log(const param_type& p, std::string* l);
 };
 
+template <>
+struct ParamTraits<media::EncryptionScheme> {
+  typedef media::EncryptionScheme param_type;
+  static void GetSize(base::PickleSizer* s, const param_type& p);
+  static void Write(base::Pickle* m, const param_type& p);
+  static bool Read(const base::Pickle* m,
+                   base::PickleIterator* iter,
+                   param_type* r);
+  static void Log(const param_type& p, std::string* l);
+};
+
 }  // namespace IPC
 
 #endif  // MEDIA_BASE_IPC_MEDIA_PARAM_TRAITS_H_