Convert //components/metrics from scoped_ptr to std::unique_ptr

components/metrics/cloned_install_detector_unittest.cc

Index: components/metrics/cloned_install_detector_unittest.cc
diff --git a/components/metrics/cloned_install_detector_unittest.cc b/components/metrics/cloned_install_detector_unittest.cc
index 91b24e8bf5735723e384886b592154c2d5e93f62..92625996ac5c8c5f0c979188f7423ddc0f7528a6 100644
--- a/components/metrics/cloned_install_detector_unittest.cc
+++ b/components/metrics/cloned_install_detector_unittest.cc
@@ -27,7 +27,7 @@ TEST(ClonedInstallDetectorTest, SaveId) {
   TestingPrefServiceSimple prefs;
   ClonedInstallDetector::RegisterPrefs(prefs.registry());
 
-  scoped_ptr<ClonedInstallDetector> detector(
+  std::unique_ptr<ClonedInstallDetector> detector(
       new ClonedInstallDetector(MachineIdProvider::CreateInstance()));
 
   detector->SaveMachineId(&prefs, kTestRawId);
@@ -42,7 +42,7 @@ TEST(ClonedInstallDetectorTest, DetectClone) {
   // Save a machine id that will cause a clone to be detected.
   prefs.SetInteger(prefs::kMetricsMachineId, kTestHashedId + 1);
 
-  scoped_ptr<ClonedInstallDetector> detector(
+  std::unique_ptr<ClonedInstallDetector> detector(
       new ClonedInstallDetector(MachineIdProvider::CreateInstance()));
 
   detector->SaveMachineId(&prefs, kTestRawId);