Move const double data out of header file

components/offline_pages/offline_page_storage_manager.cc

Index: components/offline_pages/offline_page_storage_manager.cc
diff --git a/components/offline_pages/offline_page_storage_manager.cc b/components/offline_pages/offline_page_storage_manager.cc
index cc3fd4cd5b7057656144556701aa16e924a98baf..8202ab7884fb1534300bf75cb68000a7ac0c02a3 100644
--- a/components/offline_pages/offline_page_storage_manager.cc
+++ b/components/offline_pages/offline_page_storage_manager.cc
@@ -18,6 +18,13 @@ 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,