Componentize DriveMetricsProvider*

components/metrics/drive_metrics_provider.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 "base/base_paths.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/path_service.h"
+#include "base/task_runner_util.h"
 #include "base/time/time.h"
-#include "chrome/common/chrome_paths.h"
-#include "content/public/browser/browser_thread.h"
 
-DriveMetricsProvider::DriveMetricsProvider() : weak_ptr_factory_(this) {}
+namespace metrics {
+
+DriveMetricsProvider::DriveMetricsProvider(
+    scoped_refptr<base::SequencedTaskRunner> file_thread,
+    int local_state_path_key)
+    : file_thread_(file_thread),
+      local_state_path_key_(local_state_path_key),
+      weak_ptr_factory_(this) {}
 
 DriveMetricsProvider::~DriveMetricsProvider() {}
 
 void DriveMetricsProvider::ProvideSystemProfileMetrics(
     metrics::SystemProfileProto* system_profile_proto) {
   auto* hardware = system_profile_proto->mutable_hardware();
   FillDriveMetrics(metrics_.app_drive, hardware->mutable_app_drive());
   FillDriveMetrics(metrics_.user_data_drive,
                    hardware->mutable_user_data_drive());
 }
 
 void DriveMetricsProvider::GetDriveMetrics(const base::Closure& done) {
   got_metrics_callback_ = done;
 
-  content::BrowserThread::PostTaskAndReplyWithResult(
-      content::BrowserThread::FILE, FROM_HERE,
-      base::Bind(&DriveMetricsProvider::GetDriveMetricsOnFileThread),
+  base::PostTaskAndReplyWithResult(
+      file_thread_.get(), FROM_HERE,
+      base::Bind(&DriveMetricsProvider::GetDriveMetricsOnFileThread,
+                 local_state_path_key_),
       base::Bind(&DriveMetricsProvider::GotDriveMetrics,
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
 DriveMetricsProvider::SeekPenaltyResponse::SeekPenaltyResponse()
     : success(false) {}
 
 // static
 DriveMetricsProvider::DriveMetrics
-DriveMetricsProvider::GetDriveMetricsOnFileThread() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
-
+DriveMetricsProvider::GetDriveMetricsOnFileThread(int local_state_path_key) {
   DriveMetricsProvider::DriveMetrics metrics;
   QuerySeekPenalty(base::FILE_EXE, &metrics.app_drive);
-  QuerySeekPenalty(chrome::FILE_LOCAL_STATE, &metrics.user_data_drive);
+  QuerySeekPenalty(local_state_path_key, &metrics.user_data_drive);
   return metrics;
 }
 
 // static
 void DriveMetricsProvider::QuerySeekPenalty(
     int path_service_key,
     DriveMetricsProvider::SeekPenaltyResponse* response) {
   DCHECK(response);
 
   base::FilePath path;
@@ skipping 20 matching lines @@
   metrics_ = metrics;
   got_metrics_callback_.Run();
 }
 
 void DriveMetricsProvider::FillDriveMetrics(
     const DriveMetricsProvider::SeekPenaltyResponse& response,
     metrics::SystemProfileProto::Hardware::Drive* drive) {
   if (response.success)
     drive->set_has_seek_penalty(response.has_seek_penalty);
 }
+
+}  // namespace metrics