Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/core/archive_manager.h

Index: components/offline_pages/core/archive_manager.h
diff --git a/components/offline_pages/archive_manager.h b/components/offline_pages/core/archive_manager.h
similarity index 93%
rename from components/offline_pages/archive_manager.h
rename to components/offline_pages/core/archive_manager.h
index 23e29c14e29ad9607273188e9dc172d28788404a..dc92e7de79b415b282573ff7ba10a0471314d012 100644
--- a/components/offline_pages/archive_manager.h
+++ b/components/offline_pages/core/archive_manager.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_OFFLINE_PAGES_ARCHIVE_MANAGER_H_
-#define COMPONENTS_OFFLINE_PAGES_ARCHIVE_MANAGER_H_
+#ifndef COMPONENTS_OFFLINE_PAGES_CORE_ARCHIVE_MANAGER_H_
+#define COMPONENTS_OFFLINE_PAGES_CORE_ARCHIVE_MANAGER_H_
 
 #include <set>
 #include <vector>
@@ -75,4 +75,4 @@ class ArchiveManager {
 
 }  // namespace offline_pages
 
-#endif  // COMPONENTS_OFFLINE_PAGES_ARCHIVE_MANAGER_H_
+#endif  // COMPONENTS_OFFLINE_PAGES_CORE_ARCHIVE_MANAGER_H_