Revert of App button click exits WebVR presentation.

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 ba43e68136dfff93f795ffb4eec9fcf168e64643..e2c13799be1ed01f1139e64bb684287ffbf097bd 100644
--- a/chrome/browser/android/vr_shell/vr_gl_thread.cc
+++ b/chrome/browser/android/vr_shell/vr_gl_thread.cc
@@ -86,11 +86,6 @@
       FROM_HERE, base::Bind(&VrShell::ForceExitVr, weak_vr_shell_));
 }
 
-void VrGLThread::ExitPresent() {
-  main_thread_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&VrShell::ExitPresent, weak_vr_shell_));
-}
-
 void VrGLThread::RunVRDisplayInfoCallback(
     const base::Callback<void(device::mojom::VRDisplayInfoPtr)>& callback,
     device::mojom::VRDisplayInfoPtr* info) {