Update EME MediaKeyNeededEvent.initData for ISO BMFF to match current spec.

media/mp4/box_definitions.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.
 
 #ifndef MEDIA_MP4_BOX_DEFINITIONS_H_
 #define MEDIA_MP4_BOX_DEFINITIONS_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 25 matching lines @@
   DECLARE_BOX_METHODS(FileType);
 
   FourCC major_brand;
   uint32 minor_version;
 };
 
 struct MEDIA_EXPORT ProtectionSystemSpecificHeader : Box {
   DECLARE_BOX_METHODS(ProtectionSystemSpecificHeader);
 
   std::vector<uint8> system_id;
-  std::vector<uint8> data;
+  std::vector<uint8> raw_box;
 };
 
 struct MEDIA_EXPORT SampleAuxiliaryInformationOffset : Box {
   DECLARE_BOX_METHODS(SampleAuxiliaryInformationOffset);
 
   std::vector<uint64> offsets;
 };
 
 struct MEDIA_EXPORT SampleAuxiliaryInformationSize : Box {
   DECLARE_BOX_METHODS(SampleAuxiliaryInformationSize);
@@ skipping 285 matching lines @@
   std::vector<TrackFragment> tracks;
   std::vector<ProtectionSystemSpecificHeader> pssh;
 };
 
 #undef DECLARE_BOX
 
 }  // namespace mp4
 }  // namespace media
 
 #endif  // MEDIA_MP4_BOX_DEFINITIONS_H_