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/test/event_metric_unittest.cpp

@@ -1,19 +1,18 @@
-// 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.
 //
 // Unit tests for EventMetric
-
 #include "event_metric.h"
 
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
-#include "string_conversions.h"
+#include <gtest/gtest.h>
 
-using drm_metrics::TestMetrics;
-using testing::IsNull;
-using testing::NotNull;
+#include "string_conversions.h"
+#include "wv_cdm_types.h"
 
 namespace wvcdm {
 namespace metrics {
+using drm_metrics::TestMetrics;
 
 class EventMetricTest : public ::testing::Test {
  public:
@@ -191,6 +190,5 @@ TEST_F(EventMetricTest, Pow2BucketTest) {
   value << Pow2Bucket(0x7FFFFFFF);
   EXPECT_EQ("1073741824", value.str());
 }
-
 }  // namespace metrics
 }  // namespace wvcdm