Componentize DriveMetricsProvider*

components/metrics/drive_metrics_provider_ios.mm

Index: components/metrics/drive_metrics_provider_ios.mm
diff --git a/chrome/browser/metrics/drive_metrics_provider_ios.mm b/components/metrics/drive_metrics_provider_ios.mm
similarity index 78%
rename from chrome/browser/metrics/drive_metrics_provider_ios.mm
rename to components/metrics/drive_metrics_provider_ios.mm
index beb9e8c773f52ec62009f7fe63581d3953a6a271..a653dd6f3ef24e0a1e69e3b9522d6313a1cac5a6 100644
--- a/chrome/browser/metrics/drive_metrics_provider_ios.mm
+++ b/components/metrics/drive_metrics_provider_ios.mm
@@ -2,7 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/metrics/drive_metrics_provider.h"
+#include "components/metrics/drive_metrics_provider.h"
+
+namespace metrics {
 
 // static
 bool DriveMetricsProvider::HasSeekPenalty(const base::FilePath& path,
@@ -10,3 +12,5 @@ bool DriveMetricsProvider::HasSeekPenalty(const base::FilePath& path,
   *has_seek_penalty = false;
   return true;
 }
+
+}  // namespace metrics