Set the WM_CLASS property of X11 windows in Linux Aura build.

chrome/browser/shell_integration_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 "chrome/browser/shell_integration_linux.h"
 
 #include <fcntl.h>
 #include <glib.h>
 #include <stdlib.h>
 #include <sys/stat.h>
@@ skipping 743 matching lines @@
     g_key_file_set_string(key_file, kDesktopEntry, "Icon", icon_name.c_str());
   } else {
     g_key_file_set_string(key_file, kDesktopEntry, "Icon",
                           GetIconName().c_str());
   }
 
   // Set the "NoDisplay" key.
   if (no_display)
     g_key_file_set_string(key_file, kDesktopEntry, "NoDisplay", "true");
 
-#if defined(TOOLKIT_GTK)
   std::string wmclass = web_app::GetWMClassFromAppName(app_name);
   g_key_file_set_string(key_file, kDesktopEntry, "StartupWMClass",
                         wmclass.c_str());
-#endif
 
   gsize length = 0;
   gchar* data_dump = g_key_file_to_data(key_file, &length, NULL);
   if (data_dump) {
     // If strlen(data_dump[0]) == 0, this check will fail.
     if (data_dump[0] == '\n') {
       // Older versions of glib produce a leading newline. If this is the case,
       // remove it to avoid double-newline after the shebang.
       output_buffer += (data_dump + 1);
     } else {
@@ skipping 163 matching lines @@
     for (std::vector<base::FilePath>::const_iterator it =
          shortcut_filenames_app_menu.begin();
          it != shortcut_filenames_app_menu.end(); ++it) {
       DeleteShortcutInApplicationsMenu(*it,
                                        base::FilePath(kDirectoryFilename));
     }
   }
 }
 
 }  // namespace ShellIntegrationLinux