Enable speech input by default and remove unused code.

content/browser/speech/speech_input_manager.h

 // Copyright (c) 2010 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.
 
 #ifndef CONTENT_BROWSER_SPEECH_SPEECH_INPUT_MANAGER_H_
 #define CONTENT_BROWSER_SPEECH_SPEECH_INPUT_MANAGER_H_
 
 #include "base/basictypes.h"
 #include "chrome/common/speech_input_result.h"
 #include "ui/gfx/rect.h"
@@ skipping 13 matching lines @@
     virtual void SetRecognitionResult(
         int caller_id,
         const SpeechInputResultArray& result) = 0;
     virtual void DidCompleteRecording(int caller_id) = 0;
     virtual void DidCompleteRecognition(int caller_id) = 0;
 
    protected:
     virtual ~Delegate() {}
   };
 
-  // Whether the speech input feature is enabled, based on the browser channel
-  // information and command line flags.
-  static bool IsFeatureEnabled();
-
   // Invokes the platform provided microphone settings UI in a non-blocking way,
   // via the BrowserThread::FILE thread.
   static void ShowAudioInputSettings();
 
   // Factory method to access the singleton. We have this method here instead of
   // using Singleton directly in the calling code to aid tests in injection
   // mocks.
   static SpeechInputManager* Get();
   // Factory method definition useful for tests.
   typedef SpeechInputManager* (AccessorMethod)();
@@ skipping 24 matching lines @@
 
 // This typedef is to workaround the issue with certain versions of
 // Visual Studio where it gets confused between multiple Delegate
 // classes and gives a C2500 error. (I saw this error on the try bots -
 // the workaround was not needed for my machine).
 typedef SpeechInputManager::Delegate SpeechInputManagerDelegate;
 
 }  // namespace speech_input
 
 #endif  // CONTENT_BROWSER_SPEECH_SPEECH_INPUT_MANAGER_H_