Move all files related to tracked preferences from c/b/prefs to c/b/prefs/tracked.

chrome/browser/prefs/tracked/tracked_atomic_preference.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_atomic_preference.h"
 
 #include "base/values.h"
-#include "chrome/browser/prefs/pref_hash_store_transaction.h"
+#include "chrome/browser/prefs/tracked/pref_hash_store_transaction.h"
 #include "chrome/browser/prefs/tracked/tracked_preference_validation_delegate.h"
 
 TrackedAtomicPreference::TrackedAtomicPreference(
     const std::string& pref_path,
     size_t reporting_id,
     size_t reporting_ids_count,
     PrefHashFilter::EnforcementLevel enforcement_level,
     TrackedPreferenceValidationDelegate* delegate)
     : pref_path_(pref_path),
       helper_(pref_path, reporting_id, reporting_ids_count, enforcement_level),
@@ skipping 32 matching lines @@
 
   if (value_state != PrefHashStoreTransaction::UNCHANGED) {
     // Store the hash for the new value (whether it was reset or not).
     const base::Value* new_value = NULL;
     pref_store_contents->Get(pref_path_, &new_value);
     transaction->StoreHash(pref_path_, new_value);
   }
 
   return was_reset;
 }