Navigation: move RestoreType and ReloadType into a separate file

content/public/browser/navigation_details.cc

Index: content/public/browser/navigation_details.cc
diff --git a/content/public/browser/navigation_details.cc b/content/public/browser/navigation_details.cc
index 88f247f392594252e763a2b4746427815c9a9878..8d400f2369321e7fd57a5eb7642f2266563aebd4 100644
--- a/content/public/browser/navigation_details.cc
+++ b/content/public/browser/navigation_details.cc
@@ -8,13 +8,12 @@ namespace content {
 
 LoadCommittedDetails::LoadCommittedDetails()
     : entry(nullptr),
-      type(content::NAVIGATION_TYPE_UNKNOWN),
+      type(content::NavigationType::UNKNOWN),
       previous_entry_index(-1),
       did_replace_entry(false),
       is_in_page(false),
       is_main_frame(true),
-      http_status_code(0) {
-}
+      http_status_code(0) {}
 
 LoadCommittedDetails::LoadCommittedDetails(const LoadCommittedDetails& other) =
     default;