Fix base::nix::GetDesktopEnvironment for newer versions of Unity

base/nix/xdg_util.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 "base/nix/xdg_util.h"
 
 #include <string>
 
 #include "base/base_paths.h"
 #include "base/environment.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/path_service.h"
+#include "base/strings/string_util.h"
 #include "base/third_party/xdg_user_dirs/xdg_user_dir_lookup.h"
 
 namespace {
 
 // The KDE session version environment variable introduced in KDE 4.
 const char kKDESessionEnvVar[] = "KDE_SESSION_VERSION";
 
 }  // namespace
 
 namespace base {
@@ skipping 26 matching lines @@
     path = path.Append(fallback_dir);
   }
   return path.StripTrailingSeparators();
 }
 
 DesktopEnvironment GetDesktopEnvironment(Environment* env) {
   // XDG_CURRENT_DESKTOP is the newest standard circa 2012.
   std::string xdg_current_desktop;
   if (env->GetVar("XDG_CURRENT_DESKTOP", &xdg_current_desktop)) {
     // Not all desktop environments set this env var as of this writing.
-    if (xdg_current_desktop == "Unity") {
+    if (base::StartsWith(xdg_current_desktop, "Unity",
+                         base::CompareCase::SENSITIVE)) {
       // gnome-fallback sessions set XDG_CURRENT_DESKTOP to Unity
       // DESKTOP_SESSION can be gnome-fallback or gnome-fallback-compiz
       std::string desktop_session;
       if (env->GetVar("DESKTOP_SESSION", &desktop_session) &&
           desktop_session.find("gnome-fallback") != std::string::npos) {
         return DESKTOP_ENVIRONMENT_GNOME;
       }
       return DESKTOP_ENVIRONMENT_UNITY;
     } else if (xdg_current_desktop == "GNOME") {
       return DESKTOP_ENVIRONMENT_GNOME;
@@ skipping 58 matching lines @@
   }
   return NULL;
 }
 
 const char* GetDesktopEnvironmentName(Environment* env) {
   return GetDesktopEnvironmentName(GetDesktopEnvironment(env));
 }
 
 }  // namespace nix
 }  // namespace base