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 78f071e1f574ba24cfd93cdc623c80684b2e3610..1b4c0f551359949ad91c7f137762ba62832425c0 100644
--- a/chrome/browser/chromeos/external_metrics.cc
+++ b/chrome/browser/chromeos/external_metrics.cc
@@ -132,13 +132,11 @@ void ExternalMetrics::RecordSparseHistogram(
 }
 
 int ExternalMetrics::CollectEvents() {
-  ScopedVector<metrics::MetricSample> samples;
+  std::vector<std::unique_ptr<metrics::MetricSample>> samples;

[Ilya Sherman, 2017/02/13 19:21:30]

Please #include <vector> and <memory> at the top of this file, since neither of
them is #included by the header.  Please go through for all of the files that
you've modified, and double-check whether these includes are needed there as
well.

[ke.he, 2017/02/14 04:24:14]

Done.

   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