Get rid of the last RenderViewHostDelegate usage in chrome.

chrome/browser/ui/browser_navigator.cc

Index: chrome/browser/ui/browser_navigator.cc
===================================================================
--- chrome/browser/ui/browser_navigator.cc	(revision 138434)
+++ chrome/browser/ui/browser_navigator.cc	(working copy)
@@ -36,7 +36,6 @@
 #include "content/public/browser/browser_url_handler.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_view_host.h"
-#include "content/public/browser/render_view_host_delegate.h"
 #include "content/public/browser/web_contents.h"
 #include "net/http/http_util.h"
 
@@ -542,10 +541,8 @@
       DCHECK(params->target_contents);
     }
 
-    if (user_initiated) {
-      params->target_contents->web_contents()->GetRenderViewHost()->
-          GetDelegate()->OnUserGesture();
-    }
+    if (user_initiated)
+      params->target_contents->web_contents()->UserGestureDone();
 
     InitializeExtraHeaders(params, params->target_contents->profile(),
                            &extra_headers);