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/src/counter_metric.cpp

@@ -1,15 +1,14 @@
-// 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 implementations for the BaseCounterMetric, the base class
 // for CounterMetric.
 
 #include "counter_metric.h"
 
-#include "wv_metrics.pb.h"
-
 namespace wvcdm {
 namespace metrics {
-
 void BaseCounterMetric::Increment(const std::string& counter_key,
                                   int64_t value) {
   std::unique_lock<std::mutex> lock(internal_lock_);
@@ -20,6 +19,5 @@ void BaseCounterMetric::Increment(const std::string& counter_key,
     value_map_[counter_key] = value_map_[counter_key] + value;
   }
 }
-
 }  // namespace metrics
 }  // namespace wvcdm