Navigation: move RestoreType and ReloadType into a separate file

content/browser/frame_host/navigator_delegate.h

Index: content/browser/frame_host/navigator_delegate.h
diff --git a/content/browser/frame_host/navigator_delegate.h b/content/browser/frame_host/navigator_delegate.h
index 37097170dbe62180282011b1e251906f4cdcd6e1..e0598a1cfac00607a0ced80e95dea016d700e06f 100644
--- a/content/browser/frame_host/navigator_delegate.h
+++ b/content/browser/frame_host/navigator_delegate.h
@@ -102,9 +102,8 @@ class CONTENT_EXPORT NavigatorDelegate {
 
   // Notifies the Navigator embedder that a navigation to the pending
   // NavigationEntry has started in the browser process.
-  virtual void DidStartNavigationToPendingEntry(
-      const GURL& url,
-      NavigationController::ReloadType reload_type) {}
+  virtual void DidStartNavigationToPendingEntry(const GURL& url,
+                                                ReloadType reload_type) {}
 
   // Opens a URL with the given parameters. See PageNavigator::OpenURL, which
   // this forwards to.