Make SpeechRecognizerApplicationDelegate class public.

services/speech_recognizer/BUILD.gn

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//mojo/android/rules.gni")
 
 mojo_android_java_application("speech_recognizer") {
   sources = [
     "src/org/chromium/mojo/speech_recognizer/SpeechRecognizer.java",
   ]
 
   mojo_main = "org.chromium.mojo.speech_recognizer.SpeechRecognizer"
 
   deps = [
     ":speech_recognizer_lib",
     "//mojo/public/java:application",
   ]
 }
 
+# Library that allows the service code to be included directly into the
+# embedding shell. Used by https://manganese.googlesource.com/.
 android_library("speech_recognizer_lib") {
   java_files = [
     "src/org/chromium/mojo/speech_recognizer/SpeechRecognizerApplicationDelegate.java",
     "src/org/chromium/mojo/speech_recognizer/SpeechRecognizerServiceImpl.java",
   ]
 
   deps = [
     "//mojo/public/interfaces/application:application_java",
     "//mojo/public/java:application",
     "//mojo/public/java:bindings",
     "//mojo/public/java:system",
     "//mojo/services/speech_recognizer/interfaces:interfaces_java",
   ]
 }