Linux: Detect Unity as a desktop environment.

media/audio/linux/audio_manager_linux.cc

 // Copyright (c) 2012 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 "media/audio/linux/audio_manager_linux.h"
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/logging.h"
 #include "base/nix/xdg_util.h"
@@ skipping 53 matching lines @@
 void AudioManagerLinux::MuteAll() {
   NOTIMPLEMENTED();
 }
 
 void AudioManagerLinux::UnMuteAll() {
   NOTIMPLEMENTED();
 }
 
 bool AudioManagerLinux::CanShowAudioInputSettings() {
   scoped_ptr<base::Environment> env(base::Environment::Create());
-  base::nix::DesktopEnvironment desktop = base::nix::GetDesktopEnvironment(
-      env.get());
-  return (desktop == base::nix::DESKTOP_ENVIRONMENT_GNOME ||
-          desktop == base::nix::DESKTOP_ENVIRONMENT_KDE3 ||
-          desktop == base::nix::DESKTOP_ENVIRONMENT_KDE4);
+
+  switch (base::nix::GetDesktopEnvironment(env.get())) {
+    case base::nix::DESKTOP_ENVIRONMENT_GNOME:
+    case base::nix::DESKTOP_ENVIRONMENT_KDE3:
+    case base::nix::DESKTOP_ENVIRONMENT_KDE4:
+      return true;
+    case base::nix::DESKTOP_ENVIRONMENT_OTHER:
+    case base::nix::DESKTOP_ENVIRONMENT_UNITY:
+    case base::nix::DESKTOP_ENVIRONMENT_XFCE:
+      return false;
+  }
+  // g++ can't figure out the switch statement has all cases covered.
+  NOTREACHED();
+  return false;
 }
 
 void AudioManagerLinux::ShowAudioInputSettings() {
   scoped_ptr<base::Environment> env(base::Environment::Create());
   base::nix::DesktopEnvironment desktop = base::nix::GetDesktopEnvironment(
       env.get());
   std::string command((desktop == base::nix::DESKTOP_ENVIRONMENT_GNOME) ?
                       "gnome-volume-control" : "kmix");
   base::LaunchProcess(CommandLine(FilePath(command)), base::LaunchOptions(),
                       NULL);
@@ skipping 217 matching lines @@
   }
 
   return new AlsaPcmInputStream(this, device_name, params, wrapper_.get());
 }
 
 AudioManager* CreateAudioManager() {
   return new AudioManagerLinux();
 }
 
 }  // namespace media