VR: Render the current URL and security level on the URL bar.

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 e7cafaa8e96ec39bd57346bdbc5e9e1aa41db888..e2c13799be1ed01f1139e64bb684287ffbf097bd 100644
--- a/chrome/browser/android/vr_shell/vr_gl_thread.cc
+++ b/chrome/browser/android/vr_shell/vr_gl_thread.cc
@@ -99,6 +99,11 @@ void VrGLThread::OnContentPaused(bool enabled) {
       base::Bind(&VrShell::OnContentPaused, weak_vr_shell_, enabled));
 }
 
+void VrGLThread::NavigateBack() {
+  main_thread_task_runner_->PostTask(
+      FROM_HERE, base::Bind(&VrShell::NavigateBack, weak_vr_shell_));
+}
+
 void VrGLThread::SetFullscreen(bool enabled) {
   WaitUntilThreadStarted();
   task_runner()->PostTask(FROM_HERE, base::Bind(&UiSceneManager::SetFullscreen,