add audio

ui/keyboard/keyboard_util.cc

 // Copyright (c) 2013 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 "ui/keyboard/keyboard_util.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string16.h"
 #include "grit/keyboard_resources.h"
 #include "grit/keyboard_resources_map.h"
+#include "media/audio/audio_manager.h"
+#include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/ime/input_method.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/events/event_processor.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/dom/dom_code.h"
 #include "ui/events/keycodes/dom/dom_key.h"
 #include "ui/events/keycodes/dom/keycode_converter.h"
 #include "ui/events/keycodes/keyboard_code_conversion.h"
 #include "ui/keyboard/keyboard_controller.h"
@@ skipping 150 matching lines @@
 }
 
 bool IsSmartDeployEnabled() {
   std::string keyboard_switch =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kSmartVirtualKeyboard);
   return keyboard_switch != switches::kSmartVirtualKeyboardDisabled;
 }
 
 bool IsVoiceInputEnabled() {
-  return !base::CommandLine::ForCurrentProcess()->HasSwitch(
+  return media::AudioManager::Get()->HasAudioInputDevices() &&
+      !base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableVoiceInput);
 }
 
 bool InsertText(const base::string16& text) {
   keyboard::KeyboardController* controller = KeyboardController::GetInstance();
   if (!controller)
     return false;
 
   ui::InputMethod* input_method = controller->proxy()->GetInputMethod();
   if (!input_method)
@@ skipping 255 matching lines @@
 }
 
 void LogKeyboardControlEvent(KeyboardControlEvent event) {
   UMA_HISTOGRAM_ENUMERATION(
       "VirtualKeyboard.KeyboardControlEvent",
       event,
       keyboard::KEYBOARD_CONTROL_MAX);
 }
 
 }  // namespace keyboard