Implement checks for distinctiveIdentifier and persistentState in requestMediaKeySystemAccess().

media/base/key_system_info.cc

Index: media/base/key_system_info.cc
diff --git a/media/base/key_system_info.cc b/media/base/key_system_info.cc
index f4369124cf157c089ddd6272467eb6762311a747..6727c70ac98132c42a20f49af65a55ab9fd2318d 100644
--- a/media/base/key_system_info.cc
+++ b/media/base/key_system_info.cc
@@ -6,14 +6,14 @@
 
 namespace media {
 
-KeySystemInfo::KeySystemInfo(const std::string& key_system)
-    : key_system(key_system),
-      supported_init_data_types(EME_INIT_DATA_TYPE_NONE),
+KeySystemInfo::KeySystemInfo()
+    : supported_init_data_types(EME_INIT_DATA_TYPE_NONE),
       supported_codecs(EME_CODEC_NONE),
+      persistent_license_support(EME_SESSION_TYPE_SUPPORT_NOT_DECLARED),
+      persistent_release_message_support(EME_SESSION_TYPE_SUPPORT_NOT_DECLARED),
+      persistent_state_support(EME_FEATURE_SUPPORT_NOT_DECLARED),
+      distinctive_identifier_support(EME_FEATURE_SUPPORT_NOT_DECLARED),
       use_aes_decryptor(false) {
 }
 
-KeySystemInfo::~KeySystemInfo() {
-}
-
 }  // namespace media