Add media_native flag namespace

Test: add sepolicy, build, check GetServerConfigurableFlag function in
      media apex.
Bug: 123658514
Change-Id: Ic22561742c969d79f6aba8d2043501492cc30228

api/system-current.txt

@@ -5750,6 +5750,10 @@ package android.provider {
     field public static final String NAMESPACE = "intelligence_attention";
   }
 
+  public static interface DeviceConfig.MediaNative {
+    field public static final String NAMESPACE = "media_native";
+  }
+
   public static interface DeviceConfig.NotificationAssistant {
     field public static final String GENERATE_ACTIONS = "generate_actions";
     field public static final String GENERATE_REPLIES = "generate_replies";

core/java/android/provider/DeviceConfig.java

@@ -170,6 +170,16 @@ public final class DeviceConfig {
         String NAMESPACE = "runtime_native_boot";
     }
 
+    /**
+     * Namespace for all media native related features.
+     *
+     * @hide
+     */
+    @SystemApi
+    public interface MediaNative {
+        String NAMESPACE = "media_native";
+    }
+
     /**
      * Namespace for all activity manager related features that are used at the native level.
      * These features are applied at reboot.

services/core/java/com/android/server/am/SettingsToPropertiesMapper.java

@@ -78,6 +78,7 @@ class SettingsToPropertiesMapper {
     @VisibleForTesting
     static final String[] sDeviceConfigScopes = new String[] {
         DeviceConfig.ActivityManagerNativeBoot.NAMESPACE,
+        DeviceConfig.MediaNative.NAMESPACE,
         DeviceConfig.NAMESPACE_INPUT_NATIVE_BOOT,
         DeviceConfig.NAMESPACE_NETD_NATIVE,
         DeviceConfig.RuntimeNativeBoot.NAMESPACE,