Don't generate javadoc for internal code in directboot. (#3483)

* Don't generate javadoc for internal code in directboot.

* Update api.txt

Author: rlazo

firebase-messaging-directboot/api.txt

@@ -1,27 +1 @@
 // Signature format: 2.0
-package com.google.firebase.messaging.directboot.threads {
-
-  public interface ExecutorFactory {
-    method public void executeOneOff(String, String, com.google.firebase.messaging.directboot.threads.ThreadPriority, Runnable);
-    method public java.util.concurrent.ScheduledExecutorService newScheduledThreadPool(int, com.google.firebase.messaging.directboot.threads.ThreadPriority);
-    method public java.util.concurrent.ScheduledExecutorService newScheduledThreadPool(int, java.util.concurrent.ThreadFactory, com.google.firebase.messaging.directboot.threads.ThreadPriority);
-    method public java.util.concurrent.ExecutorService newSingleThreadExecutor(com.google.firebase.messaging.directboot.threads.ThreadPriority);
-    method public java.util.concurrent.ExecutorService newSingleThreadExecutor(java.util.concurrent.ThreadFactory, com.google.firebase.messaging.directboot.threads.ThreadPriority);
-    method public java.util.concurrent.ExecutorService newThreadPool(com.google.firebase.messaging.directboot.threads.ThreadPriority);
-    method public java.util.concurrent.ExecutorService newThreadPool(java.util.concurrent.ThreadFactory, com.google.firebase.messaging.directboot.threads.ThreadPriority);
-    method public java.util.concurrent.ExecutorService newThreadPool(int, com.google.firebase.messaging.directboot.threads.ThreadPriority);
-    method public java.util.concurrent.ExecutorService newThreadPool(int, java.util.concurrent.ThreadFactory, com.google.firebase.messaging.directboot.threads.ThreadPriority);
-    method public java.util.concurrent.Future<?> submitOneOff(String, String, com.google.firebase.messaging.directboot.threads.ThreadPriority, Runnable);
-  }
-
-  public class PoolableExecutors {
-    method public static com.google.firebase.messaging.directboot.threads.ExecutorFactory factory();
-  }
-
-  public enum ThreadPriority {
-    enum_constant public static final com.google.firebase.messaging.directboot.threads.ThreadPriority HIGH_SPEED;
-    enum_constant public static final com.google.firebase.messaging.directboot.threads.ThreadPriority LOW_POWER;
-  }
-
-}
-

firebase-messaging-directboot/src/main/java/com/google/firebase/messaging/directboot/threads/package-info.java

@@ -0,0 +1,16 @@
+// Copyright 2022 Google LLC
+//
+// 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.
+
+/** @hide */
+package com.google.firebase.messaging.directboot.threads;