Removes Experimental hotword-always-on feature.

Removes Experimental hotword-always-on feature.

It was added for some experiments, but it's over. We don't
need this flag anymore. Even when we really want to do this
in the future, the code base would be quite different and
this would not be reused.

BUG=None
TBR=xiyuan@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=261518

[Jun Mukai, 2014-03-28 20:53:06]

The CQ bit was checked by mukai@chromium.org

[commit-bot: I haz the power, 2014-03-28 20:55:36]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mukai@chromium.org/217423002/1

[commit-bot: I haz the power, 2014-03-29 00:44:52]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-29 00:44:52]

Commit queue rejected this change because the description was changed
between the time the change entered the commit queue and the time it
was ready to commit. You can safely check the commit box again.

[Jun Mukai, 2014-03-29 00:56:36]

The CQ bit was checked by mukai@chromium.org

[commit-bot: I haz the power, 2014-03-29 00:57:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mukai@chromium.org/217423002/1

[commit-bot: I haz the power, 2014-03-29 02:30:17]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-29 02:30:17]

Try jobs failed on following builders:
  tryserver.chromium on linux_chromium_chromeos_rel

[Jun Mukai, 2014-03-31 17:15:56]

The CQ bit was checked by mukai@chromium.org

[commit-bot: I haz the power, 2014-03-31 17:18:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mukai@chromium.org/217423002/1

[Jun Mukai, 2014-03-31 18:00:56]

The CQ bit was unchecked by mukai@chromium.org

[Jun Mukai, 2014-04-02 17:40:54]

The CQ bit was checked by mukai@chromium.org

[commit-bot: I haz the power, 2014-04-02 17:41:02]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mukai@chromium.org/217423002/1

[commit-bot: I haz the power, 2014-04-03 00:52:22]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-03 00:52:23]

Retried try job too often on android_aosp for step(s) compile
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=android_ao...

[Jun Mukai, 2014-04-03 17:08:12]

The CQ bit was checked by mukai@chromium.org

[commit-bot: I haz the power, 2014-04-03 17:08:26]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mukai@chromium.org/217423002/1

[commit-bot: I haz the power, 2014-04-03 17:08:36]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-03 17:08:36]

Failed to apply patch for ui/app_list/app_list_switches.cc:
While running patch -p1 --forward --force --no-backup-if-mismatch;
  patching file ui/app_list/app_list_switches.cc
  Hunk #1 FAILED at 25.
  Hunk #2 succeeded at 58 (offset 15 lines).
  1 out of 2 hunks FAILED -- saving rejects to file
ui/app_list/app_list_switches.cc.rej

Patch:       ui/app_list/app_list_switches.cc
Index: ui/app_list/app_list_switches.cc
diff --git a/ui/app_list/app_list_switches.cc b/ui/app_list/app_list_switches.cc
index
a7e909feffdb4fddddc5537f2d80e001ba116531..4a8770d40a7d501cfddb84db6bd7f604015755db
100644
--- a/ui/app_list/app_list_switches.cc
+++ b/ui/app_list/app_list_switches.cc
@@ -25,10 +25,6 @@ const char kEnableExperimentalAppList[] =
"enable-experimental-app-list";
 const char kEnableExperimentalAppListPosition[] =
     "enable-experimental-app-list-position";
 
-// If set, it will always listen to the audio locally and open the app-list
-// when the hotword is recognized.
-const char kEnableHotwordAlwaysOn[] = "enable-app-list-hotword-always-on";
-
 // Folder UI is enabled by default.
 bool IsFolderUIEnabled() {
   return !CommandLine::ForCurrentProcess()->HasSwitch(kDisableFolderUI);
@@ -43,15 +39,6 @@ bool IsVoiceSearchEnabled() {
 #endif
 }
 
-bool IsHotwordAlwaysOnEnabled() {
-#if defined(OS_CHROMEOS)
-  return IsVoiceSearchEnabled() &&
-      CommandLine::ForCurrentProcess()->HasSwitch(kEnableHotwordAlwaysOn);
-#else
-  return false;
-#endif
-}
-
 bool IsAppInfoEnabled() {
   return CommandLine::ForCurrentProcess()->HasSwitch(kEnableAppInfo);
 }

[Jun Mukai, 2014-04-03 17:13:31]

The CQ bit was checked by mukai@chromium.org

[commit-bot: I haz the power, 2014-04-03 17:14:09]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mukai@chromium.org/217423002/20001

[commit-bot: I haz the power, 2014-04-03 20:26:06]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-03 20:26:07]

Commit queue rejected this change because the description was changed
between the time the change entered the commit queue and the time it
was ready to commit. You can safely check the commit box again.

[Jun Mukai, 2014-04-03 20:37:22]

The CQ bit was checked by mukai@chromium.org

[commit-bot: I haz the power, 2014-04-03 20:37:27]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mukai@chromium.org/217423002/20001

[commit-bot: I haz the power, 2014-04-03 20:39:30]

Change committed as 261518