Revert "Tie vr flinger to persistent vr mode"

This reverts commit f43d13e4e35ae7d3cdafc4b97c819669d42cef78.

Change-Id: Ib67db8e51b7ea2dbbe6faccce36962bf5b44a6e2
diff --git a/services/surfaceflinger/VrStateCallbacks.cpp b/services/surfaceflinger/VrStateCallbacks.cpp
new file mode 100644
index 0000000..a924def
--- /dev/null
+++ b/services/surfaceflinger/VrStateCallbacks.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "VrStateCallbacks.h"
+#include "SurfaceFlinger.h"
+
+namespace android {
+
+VrStateCallbacks::VrStateCallbacks(SurfaceFlinger& flinger)
+    : mFlinger(flinger) {}
+
+void VrStateCallbacks::onVrStateChanged(bool enabled) {
+    mFlinger.mEnterVrMode = enabled;
+    mFlinger.signalTransaction();
+}
+
+} // namespace android