Remove ScopedVector in //component/metrics

chrome/browser/chromeos/external_metrics.cc

Index: chrome/browser/chromeos/external_metrics.cc
diff --git a/chrome/browser/chromeos/external_metrics.cc b/chrome/browser/chromeos/external_metrics.cc
index 5ca83bc01ba17b733aaf6392dc8f995940795e71..24c5a4c714c439839e494526b740fbb05079fdeb 100644
--- a/chrome/browser/chromeos/external_metrics.cc
+++ b/chrome/browser/chromeos/external_metrics.cc
@@ -7,7 +7,9 @@
 #include <stddef.h>
 
 #include <map>
+#include <memory>
 #include <string>
+#include <vector>
 
 #include "base/bind.h"
 #include "base/metrics/histogram_macros.h"
@@ -133,13 +135,11 @@ void ExternalMetrics::RecordSparseHistogram(
 }
 
 int ExternalMetrics::CollectEvents() {
-  ScopedVector<metrics::MetricSample> samples;
+  std::vector<std::unique_ptr<metrics::MetricSample>> samples;
   metrics::SerializationUtils::ReadAndTruncateMetricsFromFile(uma_events_file_,
                                                               &samples);
 
-  for (ScopedVector<metrics::MetricSample>::iterator it = samples.begin();
-       it != samples.end();
-       ++it) {
+  for (auto it = samples.begin(); it != samples.end(); ++it) {
     const metrics::MetricSample& sample = **it;
 
     // Do not use the UMA_HISTOGRAM_... macros here.  They cache the Histogram