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

chrome/browser/web_applications/web_app.h

 // 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.
 
 #ifndef CHROME_BROWSER_WEB_APPLICATIONS_WEB_APP_H_
 #define CHROME_BROWSER_WEB_APPLICATIONS_WEB_APP_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 79 matching lines @@
 bool IsValidUrl(const GURL& url);
 
 #if defined(TOOLKIT_VIEWS)
 // Extracts icons info from web app data. Take only square shaped icons and
 // sort them from smallest to largest.
 typedef std::vector<WebApplicationInfo::IconInfo> IconInfoList;
 void GetIconsInfo(const WebApplicationInfo& app_info,
                   IconInfoList* icons);
 #endif
 
-#if defined(TOOLKIT_GTK)
-// GTK+ windows that correspond to web apps need to have a deterministic (and
+#if defined(OS_LINUX)
+// Windows that correspond to web apps need to have a deterministic (and
 // different) WMClass than normal chrome windows so the window manager groups
 // them as a separate application.
 std::string GetWMClassFromAppName(std::string app_name);
 #endif
 
 // Gets the name of the Chrome Apps menu folder in which to place app shortcuts.
 string16 GetAppShortcutsSubdirName();
 
 namespace internals {
 
@@ skipping 35 matching lines @@
 
 // Sanitizes |name| and returns a version of it that is safe to use as an
 // on-disk file name .
 base::FilePath GetSanitizedFileName(const string16& name);
 
 }  // namespace internals
 
 }  // namespace web_app
 
 #endif  // CHROME_BROWSER_WEB_APPLICATIONS_WEB_APP_H_