Update SpeechRecognizer to indicate if it's done when reporting results.

mojo/services/speech_recognizer/interfaces/speech_recognizer.mojom

 // 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.
 
 [DartPackage="mojo_services",
  JavaPackage="org.chromium.mojo.speech_recognizer"]
 module speech_recognizer;
 
 enum Error {
   NETWORK_TIMEOUT = 1,
@@ skipping 13 matching lines @@
 
   // Confidence score in [0,1].
   float confidence_score;
 };
 
 // Receives events from the |SpeechRecognizerService|.
 interface SpeechRecognizerListener {
   // Called when an error occurs.
   OnRecognizerError(Error error_code);
 
-  // Called when the recognizer receives results.
-  OnResults(array<UtteranceCandidate> results);
+  // Called when the recognizer receives results.  |complete| will be true if
+  // the recognizer has stopped listening with these results.
+  OnResults(array<UtteranceCandidate> results, bool complete);
 
   // Called when sound level changes.
   OnSoundLevelChanged(float rmsDb);
 };
 
 // |SpeechRecognizerService| provides access to a speech recognition service.
 // It is responsible for reading microphone input, deciding when the user is
 // done speaking, and performing speech recognition on the result.
 [ServiceName="speech_recognizer::SpeechRecognizerService"]
 interface SpeechRecognizerService {
   // Starts listening to the user. When listening has finished or an error
   // occurs, returns |result_or_error|. Any call to Listen() made while another
   // is in progress will immediately return an error.
   Listen(SpeechRecognizerListener listener);
 
   // Stops the SpeechRecognizer from listening and finishes any previous call
   // to Listen() causing it to return.
   StopListening();
 };