Block non-sysui targets from including internal sysui flags.

"Shared" flags should go in frameworks/libs/systemui/aconfig

Flag: NA
Bug: 308482106
Test: tried to include com_android_systemui_flags_lib elsewhere.
Change-Id: If0a316a1b700749684ca666bc239b454c467823c
diff --git a/packages/SystemUI/Android.bp b/packages/SystemUI/Android.bp
index 17cc9f8..543e8ca 100644
--- a/packages/SystemUI/Android.bp
+++ b/packages/SystemUI/Android.bp
@@ -166,6 +166,7 @@
         "SystemUI-statsd",
         "SettingsLib",
         "com_android_systemui_flags_lib",
+        "com_android_systemui_shared_flags_lib",
         "androidx.core_core-ktx",
         "androidx.viewpager2_viewpager2",
         "androidx.legacy_legacy-support-v4",
@@ -443,6 +444,7 @@
         "SystemUI-statsd",
         "SettingsLib",
         "com_android_systemui_flags_lib",
+        "com_android_systemui_shared_flags_lib",
         "flag-junit-base",
         "androidx.viewpager2_viewpager2",
         "androidx.legacy_legacy-support-v4",
diff --git a/packages/SystemUI/aconfig/Android.bp b/packages/SystemUI/aconfig/Android.bp
index dc4208e..e842967 100644
--- a/packages/SystemUI/aconfig/Android.bp
+++ b/packages/SystemUI/aconfig/Android.bp
@@ -1,3 +1,31 @@
+//
+// 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.
+//
+
+/**
+ * These flags are meant only for internal use in SystemUI and its variants.
+ * For shared, cross-process flags, see //frameworks/libs/systemui/aconfig
+ */
+
+package {
+    default_visibility: [
+        "//visibility:override",
+        "//frameworks/base/packages/SystemUI:__subpackages__",
+    ],
+}
+
 aconfig_declarations {
     name: "com_android_systemui_flags",
     package: "com.android.systemui",
diff --git a/packages/SystemUI/src/com/android/systemui/flags/FeatureFlagsClassicDebug.java b/packages/SystemUI/src/com/android/systemui/flags/FeatureFlagsClassicDebug.java
index 1c2ff4b..36d789e 100644
--- a/packages/SystemUI/src/com/android/systemui/flags/FeatureFlagsClassicDebug.java
+++ b/packages/SystemUI/src/com/android/systemui/flags/FeatureFlagsClassicDebug.java
@@ -16,12 +16,14 @@
 
 package com.android.systemui.flags;
 
+import static com.android.systemui.Flags.exampleFlag;
 import static com.android.systemui.flags.FlagManager.ACTION_GET_FLAGS;
 import static com.android.systemui.flags.FlagManager.ACTION_SET_FLAG;
 import static com.android.systemui.flags.FlagManager.EXTRA_FLAGS;
 import static com.android.systemui.flags.FlagManager.EXTRA_NAME;
 import static com.android.systemui.flags.FlagManager.EXTRA_VALUE;
 import static com.android.systemui.flags.FlagsCommonModule.ALL_FLAGS;
+import static com.android.systemui.shared.Flags.exampleSharedFlag;
 
 import static java.util.Objects.requireNonNull;
 
@@ -539,6 +541,8 @@
         pw.println("can override: true");
         pw.println("teamfood: " + mGantryFlags.sysuiTeamfood());
         pw.println("booleans: " + mBooleanFlagCache.size());
+        pw.println("example_flag: " + exampleFlag());
+        pw.println("example_shared_flag: " + exampleSharedFlag());
         // Sort our flags for dumping
         TreeMap<String, Boolean> dumpBooleanMap = new TreeMap<>(mBooleanFlagCache);
         dumpBooleanMap.forEach((key, value) -> pw.println("  sysui_flag_" + key + ": " + value));