Stay in VR while showing DOFF flow and connect CCT exit button to this.

chrome/browser/android/vr_shell/vr_shell.cc

Index: chrome/browser/android/vr_shell/vr_shell.cc
diff --git a/chrome/browser/android/vr_shell/vr_shell.cc b/chrome/browser/android/vr_shell/vr_shell.cc
index db0123e8b4b3e6b3fad28fa193a8c02f8ad3145d..01b1a37758068865e5e236ecae06675611c6bef2 100644
--- a/chrome/browser/android/vr_shell/vr_shell.cc
+++ b/chrome/browser/android/vr_shell/vr_shell.cc
@@ -258,6 +258,11 @@ void VrShell::NavigateBack() {
   Java_VrShellImpl_navigateBack(env, j_vr_shell_.obj());
 }
 
+void VrShell::ExitCct() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_VrShellImpl_exitCct(env, j_vr_shell_.obj());
+}
+
 void VrShell::OnTriggerEvent(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   WaitForGlThread();
   PostToGlThread(FROM_HERE, base::Bind(&VrShellGl::OnTriggerEvent,