Add file headers

Author: RenderMichael

dotnet/src/webdriver/DevTools/Json/DevToolsJsonOptions.cs

@@ -1,3 +1,22 @@
+// <copyright file="DevToolsJsonOptions.cs" company="Selenium Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+// </copyright>
+
 using System.Text.Json;
 
 #nullable enable

dotnet/src/webdriver/DevTools/Json/StringConverter.cs

@@ -1,3 +1,22 @@
+// <copyright file="StringConverter.cs" company="Selenium Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+// </copyright>
+
 using System;
 using System.Text;
 using System.Text.Json;
@@ -39,4 +58,4 @@ internal sealed class StringConverter : JsonConverter<string>
 
     public override void Write(Utf8JsonWriter writer, string value, JsonSerializerOptions options) =>
         writer.WriteStringValue(value);
-}
+}