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

chrome/browser/android/vr_shell/vr_shell_delegate.cc

Index: chrome/browser/android/vr_shell/vr_shell_delegate.cc
diff --git a/chrome/browser/android/vr_shell/vr_shell_delegate.cc b/chrome/browser/android/vr_shell/vr_shell_delegate.cc
index 6440fd0179783da1ff76b152e8fa2d3cbc34081c..68f56d11a2a60657d28ce0825b69df65925ff1bc 100644
--- a/chrome/browser/android/vr_shell/vr_shell_delegate.cc
+++ b/chrome/browser/android/vr_shell/vr_shell_delegate.cc
@@ -142,6 +142,14 @@ void VrShellDelegate::OnResume(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   }
 }
 
+void VrShellDelegate::UpdateNonPresentingContext(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    jlong context) {
+  gvr_context* ctx = reinterpret_cast<gvr_context*>(context);
+  non_presenting_delegate_->UpdateContext(ctx);
+}
+
 void VrShellDelegate::Destroy(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   delete this;
 }