Making BrowserNavigator open file browser singleton tab respecting URLs ref value

chrome/browser/ui/browser.cc

Index: chrome/browser/ui/browser.cc
diff --git a/chrome/browser/ui/browser.cc b/chrome/browser/ui/browser.cc
index 72b6f33163898ed4e6ea749d8eaf4bfeef905642..7182b4fdd6b97c4635dcbacb0dac46a49af57b76 100644
--- a/chrome/browser/ui/browser.cc
+++ b/chrome/browser/ui/browser.cc
@@ -1255,6 +1255,12 @@ void Browser::ShowSingletonTab(const GURL& url) {
   browser::Navigate(&params);
 }
 
+void Browser::ShowSingletonTabRespectRef(const GURL& url) {
+  browser::NavigateParams params(GetSingletonTabNavigateParams(url));
+  params.ref_behavior = browser::NavigateParams::RESPECT_REF;
+  browser::Navigate(&params);
+}
+
 void Browser::ShowSingletonTabOverwritingNTP(
     const browser::NavigateParams& params) {
   browser::NavigateParams local_params(params);
@@ -2110,7 +2116,8 @@ void Browser::OpenSearchEngineOptionsDialog() {
 #if defined(FILE_MANAGER_EXTENSION)
 void Browser::OpenFileManager() {
   UserMetrics::RecordAction(UserMetricsAction("OpenFileManager"));
-  ShowSingletonTab(GURL(chrome::kChromeUIFileManagerURL));
+  ShowSingletonTabRespectRef(GURL(
+      std::string(chrome::kChromeUIFileManagerURL) + "#/"));
 }
 #endif