Componentize DriveMetricsProvider*

components/metrics/drive_metrics_provider_linux.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // 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"
 
 #include <linux/kdev_t.h>  // For MAJOR()/MINOR().
 #include <sys/stat.h>
 #include <string>
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/strings/stringprintf.h"
 
 #if defined(OS_CHROMEOS)
 #include "base/sys_info.h"
 #endif
 
+namespace metrics {
+
 namespace {
 
 // See http://www.kernel.org/doc/Documentation/devices.txt for more info.
 const int kFirstScsiMajorNumber = 8;
 const int kPartitionsPerScsiDevice = 16;
 const char kRotationalFormat[] = "/sys/block/sd%c/queue/rotational";
 
 }  // namespace
 
 // static
@@ skipping 21 matching lines @@
 
   char sdX = 'a' + MINOR(path_stat.st_dev) / kPartitionsPerScsiDevice;
   std::string rotational_path = base::StringPrintf(kRotationalFormat, sdX);
   std::string rotates;
   if (!base::ReadFileToString(base::FilePath(rotational_path), &rotates))
     return false;
 
   *has_seek_penalty = rotates.substr(0, 1) == "1";
   return true;
 }
+
+}  // namespace metrics