Ambient indicator text color

Ambient indicator needs to be aware of overlay changes and
doze states.

Fixes: 62276116
Test: together with ag/2525169
Change-Id: Ia563ded294b2ebf862326f5831ee04ee11149625
diff --git a/packages/SystemUI/src/com/android/systemui/doze/DozeReceiver.java b/packages/SystemUI/src/com/android/systemui/doze/DozeReceiver.java
new file mode 100644
index 0000000..dcb3882
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/doze/DozeReceiver.java
@@ -0,0 +1,24 @@
+/*
+ * 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
+ */
+
+package com.android.systemui.doze;
+
+/**
+ * Interface for class that cares about doze states.
+ */
+public interface DozeReceiver {
+    void setDozing(boolean dozing);
+}