Moves BrightnessUtils into SettingsLib DisplayUtils.

(Renamed from DisplayDensityUtils to be more generic)

This allows the AccessibilityMenu accessibility service APK
to include a much smaller dependency static library, decreasing
the post-optimization APK size from 3mb to 200kb.

Bug: 261252772
Test: build-only changes; check local & Treehugger builds
test: inspect AccessibilityMenu APK size
Change-Id: Iad36eb739ac38d923acabe558bc8f9c0395495d3

packages/SettingsLib/Android.bp

@@ -42,7 +42,7 @@ android_library {
         "SettingsLibAdaptiveIcon",
         "SettingsLibRadioButtonPreference",
         "SettingsLibSelectorWithWidgetPreference",
-        "SettingsLibDisplayDensityUtils",
+        "SettingsLibDisplayUtils",
         "SettingsLibUtils",
         "SettingsLibEmergencyNumber",
         "SettingsLibTopIntroPreference",

packages/SettingsLib/DisplayDensityUtils/AndroidManifest.xml

@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2019 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.
-  -->
-
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          package="com.android.settingslib.display">
-
-</manifest>

packages/SettingsLib/DisplayUtils/Android.bp

@@ -8,7 +8,7 @@ package {
 }
 
 android_library {
-    name: "SettingsLibDisplayDensityUtils",
+    name: "SettingsLibDisplayUtils",
 
     srcs: ["src/**/*.java"],
 

packages/SettingsLib/DisplayUtils/AndroidManifest.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2019 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.
+  -->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.android.settingslib.display">
+
+</manifest>

packages/SettingsLib/DisplayUtils/src/com/android/settingslib/display/BrightnessUtils.java

@@ -18,6 +18,7 @@ package com.android.settingslib.display;
 
 import android.util.MathUtils;
 
+/** Utility methods for calculating the display brightness. */
 public class BrightnessUtils {
 
     public static final int GAMMA_SPACE_MIN = 0;

packages/SettingsProvider/Android.bp

@@ -33,7 +33,7 @@ android_app {
     static_libs: [
         "junit",
         "SettingsLibDeviceStateRotationLock",
-        "SettingsLibDisplayDensityUtils",
+        "SettingsLibDisplayUtils",
     ],
     platform_apis: true,
     certificate: "platform",
@@ -57,7 +57,7 @@ android_test {
         "androidx.test.rules",
         "mockito-target-minus-junit4",
         "SettingsLibDeviceStateRotationLock",
-        "SettingsLibDisplayDensityUtils",
+        "SettingsLibDisplayUtils",
         "platform-test-annotations",
         "truth-prebuilt",
     ],

packages/SystemUI/accessibility/accessibilitymenu/Android.bp

@@ -25,9 +25,17 @@ android_app {
         "androidx.coordinatorlayout_coordinatorlayout",
         "androidx.core_core",
         "androidx.viewpager_viewpager",
-        "SettingsLib",
+        "SettingsLibDisplayUtils",
     ],
 
+    optimize: {
+        enabled: true,
+        optimize: true,
+        shrink: true,
+        shrink_resources: true,
+        proguard_compatibility: false,
+    },
+
     uses_libs: [
         "org.apache.http.legacy",
     ],