Reduce app list no-new-speech timeout to 2 seconds.

chrome/browser/ui/app_list/speech_recognizer.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/ui/app_list/speech_recognizer.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/strings/string16.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/ui/app_list/speech_recognizer_delegate.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/speech_recognition_event_listener.h"
 #include "content/public/browser/speech_recognition_manager.h"
 #include "content/public/browser/speech_recognition_session_config.h"
 #include "content/public/browser/speech_recognition_session_preamble.h"
 #include "content/public/common/child_process_host.h"
 #include "content/public/common/speech_recognition_error.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "ui/app_list/speech_ui_model_observer.h"
 
 namespace app_list {
 
 // Length of timeout to cancel recognition if there's no speech heard.
 static const int kNoSpeechTimeoutInSeconds = 5;
 
 // Length of timeout to cancel recognition if no different results are received.
-static const int kNoNewSpeechTimeoutInSeconds = 3;
+static const int kNoNewSpeechTimeoutInSeconds = 2;
 
 // Invalid speech session.
 static const int kInvalidSessionId = -1;
 
 // Speech recognizer listener. This is separate from SpeechRecognizer because
 // the speech recognition engine must function from the IO thread. Because of
 // this, the lifecycle of this class must be decoupled from the lifecycle of
 // SpeechRecognizer. To avoid circular references, this class has no reference
 // to SpeechRecognizer. Instead, it has a reference to the
 // SpeechRecognizerDelegate via a weak pointer that is only ever referenced from
@@ skipping 266 matching lines @@
 void SpeechRecognizer::Stop() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   content::BrowserThread::PostTask(
       content::BrowserThread::IO,
       FROM_HERE,
       base::Bind(&SpeechRecognizer::EventListener::StopOnIOThread,
                  speech_event_listener_));
 }
 
 }  // namespace app_list