Linux: Detect Unity as a desktop environment.

content/browser/power_save_blocker_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 "content/browser/power_save_blocker.h"
 
 #include <X11/Xlib.h>
 #include <X11/extensions/dpms.h>
 // Xlib #defines Status, but we can't have that for some of our headers.
 #ifdef Status
@@ skipping 294 matching lines @@
     DPMSInfo(display, &state, &enabled);
   }
   return enabled;
 }
 
 // static
 DBusAPI PowerSaveBlocker::Delegate::SelectAPI() {
   scoped_ptr<base::Environment> env(base::Environment::Create());
   switch (base::nix::GetDesktopEnvironment(env.get())) {
     case base::nix::DESKTOP_ENVIRONMENT_GNOME:
+    case base::nix::DESKTOP_ENVIRONMENT_UNITY:
       if (DPMSEnabled())
         return GNOME_API;
       break;
     case base::nix::DESKTOP_ENVIRONMENT_XFCE:
     case base::nix::DESKTOP_ENVIRONMENT_KDE4:
       if (DPMSEnabled())
         return FREEDESKTOP_API;
       break;
     case base::nix::DESKTOP_ENVIRONMENT_KDE3:
     case base::nix::DESKTOP_ENVIRONMENT_OTHER:
       // Not supported.
       break;
   }
   return NO_API;
 }
 
 PowerSaveBlocker::PowerSaveBlocker(
     PowerSaveBlockerType type, const std::string& reason)
     : delegate_(new Delegate(type, reason)) {
   delegate_->Init();
 }
 
 PowerSaveBlocker::~PowerSaveBlocker() {
   delegate_->CleanUp();
 }
 
 }  // namespace content