Updated copyright notice and cleaned up includes.

[ Merge of http://go/wvgerrit/137810 ]

Bug: 204946540
Test: Metric unit tests
Change-Id: I78f839fafd27604a2bb78c04d587c40919c5372d

libwvdrmengine/cdm/metrics/include/field_tuples.h

@@ -1,17 +1,16 @@
-// Copyright 2017 Google Inc. All Rights Reserved.
+// Copyright 2017 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine License
+// Agreement.
 //
 // This file contains the helper classes and methods for using field tuples
 // used by metrics classes to record variations of a single metric.
 #ifndef WVCDM_METRICS_FIELD_TUPLES_H_
 #define WVCDM_METRICS_FIELD_TUPLES_H_
-
 #include <ostream>
-#include <sstream>
 
 namespace wvcdm {
 namespace metrics {
 namespace util {
-
 // TODO(blueeyes): Change to use C++ 11 support for variadic template args.
 // The C++ 03 pattern is no longer needed since we require C++11. b/68766426.
 
@@ -23,9 +22,7 @@ struct Unused {
     return out;
   }
 };
-
 }  // namespace util
 }  // namespace metrics
 }  // namespace wvcdm
-
 #endif  // WVCDM_METRICS_FIELD_TUPLES_H_