使用android：sharedUserId =“ android.uid.system”并发送广播android.speech.tts.TTS_QUEUE_PROCESSING_COMPLETED的应用

Question

frameworks / base / core / java / android / speech / tts / TextToSpeechService.java扩展了服务X和X，后者使用android：sharedUserId =“ android.uid.system”发送广播android.speech.tts.TTS_QUEUE_PROCESSING_COMPLETED不能保护广播生成WTF（多么严重的失败）

I have tried with declaring protected broadcast in X service manifest. But in logcat show permission denied.
Secondly i have tired with the default PICO TTS engine there in no system denied showing in the logs and i do see that PICO manifest doesn't use android:sharedUserId="android.uid.system" and extends frameworks/base/core/java/android/speech/tts/TextToSpeechService.java

AndroidManifest.xml of X service using 
<manifest
    package="com.abc.com"
    android:sharedUserId="android.uid.system"
    xmlns:android="http://schemas.android.com/apk/res/android">
 <application
        android:name="com.abc.com"
        coreApp="true"
        package="com.abc.com"
        android:allowBackup="true"
        android:persistent="false"
        android:icon="@drawable/ic_launcher"
        android:label="@string/service_name"
        android:theme="@style/AppTheme"
        android:directBootAware="true" >
X service is registered in manifest
<service android:name=".X"
                  android:label="@string/app_name">
    <intent-filter>
        <action android:name="android.intent.action.TTS_SERVICE" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
    <meta-data android:name="android.speech.tts" android:resource="@xml/tts_engine" />
</service>

当我们在X服务中使用android：sharedUserId =“ android.uid.system”时。 它不应显示不受保护的广播。 因为应用被视为系统应用