Populate canPlayType to renderer

content/public/renderer/key_system_info.h

 // Copyright 2013 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 CONTENT_PUBLIC_RENDERER_KEY_SYSTEM_INFO_H_
 #define CONTENT_PUBLIC_RENDERER_KEY_SYSTEM_INFO_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 39 matching lines @@
   // supported types but cannot be used to instantiate a MediaKeys object.
   // Only one parent key system is currently supported per concrete key system.
   std::string parent_key_system;
 
   // The following indicate how the corresponding CDM should be instantiated.
   bool use_aes_decryptor;
 #if defined(ENABLE_PEPPER_CDMS)
   std::string pepper_type;
 #elif defined(OS_ANDROID)
   std::vector<uint8> uuid;
+  // TODO(qinmin): this maybe replaced by a new key_system string.
+  bool video_composition_enabled;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_KEY_SYSTEM_INFO_H_