Revert of Remove ScopedVector from all other codes in media/

media/cdm/ppapi/external_clear_key/clear_key_cdm.cc

Index: media/cdm/ppapi/external_clear_key/clear_key_cdm.cc
diff --git a/media/cdm/ppapi/external_clear_key/clear_key_cdm.cc b/media/cdm/ppapi/external_clear_key/clear_key_cdm.cc
index 9ceaf14c47152eae78212ca497c5d5d2cac002ba..b6c1934b33adb2957006c7332dc414e2724fe00e 100644
--- a/media/cdm/ppapi/external_clear_key/clear_key_cdm.cc
+++ b/media/cdm/ppapi/external_clear_key/clear_key_cdm.cc
@@ -206,7 +206,7 @@
 // Shallow copy all the key information from |keys_info| into |keys_vector|.
 // |keys_vector| is only valid for the lifetime of |keys_info| because it
 // contains pointers into the latter.
-void ConvertCdmKeysInfo(const media::CdmKeysInfo& keys_info,
+void ConvertCdmKeysInfo(const std::vector<media::CdmKeyInformation*>& keys_info,
                         std::vector<cdm::KeyInformation>* keys_vector) {
   keys_vector->reserve(keys_info.size());
   for (const auto& key_info : keys_info) {
@@ -868,7 +868,7 @@
   }
 
   std::vector<cdm::KeyInformation> keys_vector;
-  ConvertCdmKeysInfo(keys_info, &keys_vector);
+  ConvertCdmKeysInfo(keys_info.get(), &keys_vector);
   host_->OnSessionKeysChange(new_session_id.data(), new_session_id.length(),
                              has_additional_usable_key, keys_vector.data(),
                              keys_vector.size());
@@ -943,7 +943,7 @@
     keys_info.swap(keys_info_for_emulated_loadsession_);
     has_received_keys_change_event_for_emulated_loadsession_ = false;
     DCHECK(!keys_vector.empty());
-    ConvertCdmKeysInfo(keys_info, &keys_vector);
+    ConvertCdmKeysInfo(keys_info.get(), &keys_vector);
     host_->OnSessionKeysChange(kLoadableSessionId, strlen(kLoadableSessionId),
                                !keys_vector.empty(), keys_vector.data(),
                                keys_vector.size());