Move const double data out of header file

components/offline_pages/offline_page_storage_manager.cc

 // Copyright 2016 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 "components/offline_pages/offline_page_storage_manager.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/time/clock.h"
 #include "base/time/default_clock.h"
 #include "components/offline_pages/client_policy_controller.h"
 #include "components/offline_pages/offline_page_client_policy.h"
 #include "components/offline_pages/offline_page_item.h"
 #include "components/offline_pages/offline_page_model.h"
 
 using LifetimeType = offline_pages::LifetimePolicy::LifetimeType;
 
 namespace offline_pages {
 
+extern const double kOfflinePageStorageLimit = 0.3;
+extern const double kOfflinePageStorageClearThreshold = 0.1;
+extern const base::TimeDelta kClearStorageInterval =
+    base::TimeDelta::FromMinutes(10);
+extern const base::TimeDelta kRemovePageItemInterval =
+    base::TimeDelta::FromDays(21);
+
 OfflinePageStorageManager::OfflinePageStorageManager(
     OfflinePageModel* model,
     ClientPolicyController* policy_controller,
     ArchiveManager* archive_manager)
     : model_(model),
       policy_controller_(policy_controller),
       archive_manager_(archive_manager),
       clock_(new base::DefaultClock()),
       weak_ptr_factory_(this) {}
 
@@ skipping 174 matching lines @@
       policy_controller_->GetPolicy(page.client_id.name_space).lifetime_policy;
   return policy.lifetime_type == LifetimeType::TEMPORARY &&
          clear_time_ - page.last_access_time >= policy.expiration_period;
 }
 
 bool OfflinePageStorageManager::IsInProgress() const {
   return clear_time_ > last_clear_time_;
 }
 
 }  // namespace offline_pages