Componentize //chrome/browser/prefs/tracked.

components/prefs_tracker/tracked_preference_helper.cc

 // Copyright 2014 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/prefs/tracked/tracked_preference_helper.h"
+#include "components/prefs_tracker/tracked_preference_helper.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 
 TrackedPreferenceHelper::TrackedPreferenceHelper(
     const std::string& pref_path,
     size_t reporting_id,
     size_t reporting_ids_count,
     PrefHashFilter::EnforcementLevel enforcement_level,
     PrefHashFilter::ValueType value_type)
@@ skipping 84 matching lines @@
                                 reporting_id_, reporting_ids_count_);
       break;
   }
 }
 
 void TrackedPreferenceHelper::ReportSplitPreferenceChangedCount(
     size_t count) const {
   // The histogram below is an expansion of the UMA_HISTOGRAM_COUNTS_100 macro
   // adapted to allow for a dynamically suffixed histogram name.
   // Note: The factory creates and owns the histogram.
-  base::HistogramBase* histogram =
-      base::LinearHistogram::FactoryGet(

[gab, 2015/07/23 21:41:16]

This was easier to read IMO and is how it's written pretty much everywhere I've
seen it in the codebase.

[Jitu( very slow this week), 2015/07/24 09:09:23]

Done.

As i used git format cl command this piece is automatically changed.

-          "Settings.TrackedSplitPreferenceChanged." + pref_path_,
-          1,
-          100,  // Allow counts up to 100.
-          101,
-          base::HistogramBase::kUmaTargetedHistogramFlag);
+  base::HistogramBase* histogram = base::LinearHistogram::FactoryGet(
+      "Settings.TrackedSplitPreferenceChanged." + pref_path_, 1,
+      100,  // Allow counts up to 100.
+      101, base::HistogramBase::kUmaTargetedHistogramFlag);
   histogram->Add(count);
 }