Remove NAVIGATION_TYPE_IN_PAGE.

content/public/browser/navigation_type.h

Index: content/public/browser/navigation_type.h
diff --git a/content/public/browser/navigation_type.h b/content/public/browser/navigation_type.h
index b63190b183edd9253ced10db6200ec36f5472da7..242101b1fa1b50c957846f60eae73d7cb6af556d 100644
--- a/content/public/browser/navigation_type.h
+++ b/content/public/browser/navigation_type.h
@@ -30,12 +30,6 @@ enum NavigationType {
   // pending entry for the load, which is then meaningless.
   NAVIGATION_TYPE_SAME_PAGE,
 
-  // The navigation was in the main frame, to a different navigation entry, but
-  // appearing to the user to be a navigation within the same page. This is the
-  // case for history.replaceState(), as well as back and forward across
-  // fragment entries and history.pushState() entries.
-  NAVIGATION_TYPE_IN_PAGE,
-
   // A new subframe was manually navigated by the user. We will create a new
   // NavigationEntry so they can go back to the previous subframe content
   // using the back button.