Navigation: move RestoreType and ReloadType into a separate file

content/browser/frame_host/navigation_entry_impl.h

Index: content/browser/frame_host/navigation_entry_impl.h
diff --git a/content/browser/frame_host/navigation_entry_impl.h b/content/browser/frame_host/navigation_entry_impl.h
index 04162896b4793be53730fc0817eeb24e33b95314..bb0c91bda98e13dc72f340e4805d69be4cb93c4c 100644
--- a/content/browser/frame_host/navigation_entry_impl.h
+++ b/content/browser/frame_host/navigation_entry_impl.h
@@ -20,6 +20,7 @@
 #include "content/public/browser/favicon_status.h"
 #include "content/public/browser/global_request_id.h"
 #include "content/public/browser/navigation_entry.h"
+#include "content/public/browser/restore_type.h"
 #include "content/public/common/page_state.h"
 #include "content/public/common/ssl_status.h"
 
@@ -301,20 +302,6 @@ class CONTENT_EXPORT NavigationEntryImpl
     user_typed_url_ = user_typed_url;
   }
 
-  // Enumerations of the possible restore types.
-  enum RestoreType {
-    // Restore from the previous session.
-    RESTORE_LAST_SESSION_EXITED_CLEANLY,
-    RESTORE_LAST_SESSION_CRASHED,
-
-    // The entry has been restored from the current session. This is used when
-    // the user issues 'reopen closed tab'.
-    RESTORE_CURRENT_SESSION,
-
-    // The entry was not restored.
-    RESTORE_NONE
-  };
-
   // The RestoreType for this entry. This is set if the entry was retored. This
   // is set to RESTORE_NONE once the entry is loaded.
   void set_restore_type(RestoreType type) {