Add Widevine developer option to settings

Bug: 301669353
Change-Id: Idcca4cc6ce2e614a79a0ac95eb8c39cf05b91f56

res/xml/development_settings.xml

@@ -619,6 +619,11 @@
             android:title="@string/transcode_settings_title"
             android:fragment="com.android.settings.development.transcode.TranscodeSettingsFragment" />
 
+        <Preference
+            android:key="widevine_settings"
+            android:title="@string/widevine_settings_title"
+            android:fragment="com.android.settings.development.widevine.WidevineSettingsFragment" />
+
     </PreferenceCategory>
 
     <PreferenceCategory

res/xml/widevine_settings.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:settings="http://schemas.android.com/apk/res-auto"
+    android:title="@string/widevine_settings_title"
+    settings:searchable="false">
+
+    <SwitchPreference
+        android:key="force_l3_fallback"
+        android:title="@string/force_l3_fallback_title"
+        android:summary="@string/force_l3_fallback_summary"
+        settings:controller="com.android.settings.development.widevine.ForceL3FallbackPreferenceController" />
+</PreferenceScreen>

src/com/android/settings/development/widevine/ForceL3FallbackPreferenceController.java

@@ -0,0 +1,61 @@
+/*
+* Copyright (C) 2023 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.settings.development.widevine;
+
+import android.content.Context;
+import android.sysprop.WidevineProperties;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.R;
+import com.android.settings.core.TogglePreferenceController;
+import com.android.settingslib.development.DevelopmentSettingsEnabler;
+
+/**
+ * The controller (in the Media Widevine settings) enforces L3 security level
+* of Widevine CDM.
+*/
+public class ForceL3FallbackPreferenceController extends TogglePreferenceController {
+
+    public ForceL3FallbackPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public boolean isChecked() {
+        return WidevineProperties.forcel3_enabled().orElse(false);
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        WidevineProperties.forcel3_enabled(isChecked);
+        return true;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        if (DevelopmentSettingsEnabler.isDevelopmentSettingsEnabled(mContext)) {
+            return AVAILABLE;
+        } else {
+            return CONDITIONALLY_UNAVAILABLE;
+        }
+    }
+
+    @Override
+    public int getSliceHighlightMenuRes() {
+        return R.string.menu_key_system;
+    }
+}

src/com/android/settings/development/widevine/WidevineSettingsFragment.java

@@ -0,0 +1,58 @@
+/*
+* Copyright (C) 2023 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.settings.development.widevine;
+
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settingslib.development.DevelopmentSettingsEnabler;
+import com.android.settingslib.search.SearchIndexable;
+
+/**
+ * Fragment for native widevine settings in Developer options.
+*/
+@SearchIndexable
+public class WidevineSettingsFragment extends DashboardFragment {
+    private static final String TAG = "WidevineSettings";
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.widevine_settings;
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.WIDEVINE_SETTINGS;
+    }
+
+    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+        new BaseSearchIndexProvider(R.xml.widevine_settings) {
+
+            @Override
+            protected boolean isPageSearchEnabled(Context context) {
+                return DevelopmentSettingsEnabler.isDevelopmentSettingsEnabled(context);
+            }
+        };
+}