Disable back button when stack is empty

chrome/browser/android/vr_shell/vr_gl_thread.cc

Index: chrome/browser/android/vr_shell/vr_gl_thread.cc
diff --git a/chrome/browser/android/vr_shell/vr_gl_thread.cc b/chrome/browser/android/vr_shell/vr_gl_thread.cc
index 1b32261c1ccf66e8b5ac284eef34198c74ac6dd9..63c58449d33f0b2136ab08509fb2dccfcde4ce93 100644
--- a/chrome/browser/android/vr_shell/vr_gl_thread.cc
+++ b/chrome/browser/android/vr_shell/vr_gl_thread.cc
@@ -152,7 +152,7 @@ void VrGLThread::SetHistoryButtonsEnabled(bool can_go_back,
   WaitUntilThreadStarted();
   task_runner()->PostTask(
       FROM_HERE, base::Bind(&UiSceneManager::SetHistoryButtonsEnabled,
-                            weak_scene_manager_, can_go_forward, can_go_back));
+                            weak_scene_manager_, can_go_back, can_go_forward));
 }
 
 void VrGLThread::SetLoadProgress(float progress) {