Making BrowserNavigator open file browser singleton tab respecting URLs ref value

chrome/browser/extensions/file_manager_util.cc

Index: chrome/browser/extensions/file_manager_util.cc
diff --git a/chrome/browser/extensions/file_manager_util.cc b/chrome/browser/extensions/file_manager_util.cc
index f8310f9ad38267118589f15110c1944acc944908..706bf0455c219ac6bde49b15d57c351d5a8fe96c 100644
--- a/chrome/browser/extensions/file_manager_util.cc
+++ b/chrome/browser/extensions/file_manager_util.cc
@@ -210,10 +210,10 @@ void FileManagerUtil::ShowFullTabUrl(Profile*,
   }
 
   std::string url = chrome::kChromeUIFileManagerURL;
-  url += '#' + EscapeUrlEncodedData(virtual_path.value(), false);
+  url += "#/" + EscapeUrlEncodedData(virtual_path.value(), false);
 
   UserMetrics::RecordAction(UserMetricsAction("ShowFileBrowserFullTab"));
-  browser->ShowSingletonTab(GURL(url));
+  browser->ShowSingletonTabRespectRef(GURL(url));
 }
 
 void FileManagerUtil::ViewItem(const FilePath& full_path, bool enqueue) {