Revert of Linux: Support the --class argument

chrome/browser/ui/views/frame/desktop_browser_frame_auralinux.cc

Index: chrome/browser/ui/views/frame/desktop_browser_frame_auralinux.cc
diff --git a/chrome/browser/ui/views/frame/desktop_browser_frame_auralinux.cc b/chrome/browser/ui/views/frame/desktop_browser_frame_auralinux.cc
index 1b180fabb119fc2efe9f2e824fb93205704186fb..ce1c651c139369dcda31a1689f58d61f4f87d3a9 100644
--- a/chrome/browser/ui/views/frame/desktop_browser_frame_auralinux.cc
+++ b/chrome/browser/ui/views/frame/desktop_browser_frame_auralinux.cc
@@ -33,20 +33,28 @@
   // Set up a custom WM_CLASS for some sorts of window types. This allows
   // task switchers in X11 environments to distinguish between main browser
   // windows and e.g app windows.
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
   const Browser& browser = *browser_view()->browser();
-  params.wm_class_name =
-      browser.is_app() && !browser.is_devtools()
-          ? web_app::GetWMClassFromAppName(browser.app_name())
-          // This window is a hosted app or v1 packaged app.
-          // NOTE: v2 packaged app windows are created by
-          // ChromeNativeAppWindowViews.
-          : shell_integration_linux::GetProgramClassName();
-  params.wm_class_class = shell_integration_linux::GetProgramClassClass();
+  params.wm_class_class = shell_integration_linux::GetProgramClassName();
+  params.wm_class_name = params.wm_class_class;
+  if (browser.is_app() && !browser.is_devtools()) {
+    // This window is a hosted app or v1 packaged app.
+    // NOTE: v2 packaged app windows are created by ChromeNativeAppWindowViews.
+    params.wm_class_name = web_app::GetWMClassFromAppName(browser.app_name());
+  } else if (command_line.HasSwitch(switches::kUserDataDir)) {
+    // Set the class name to e.g. "Chrome (/tmp/my-user-data)".  The
+    // class name will show up in the alt-tab list in gnome-shell if
+    // you're running a binary that doesn't have a matching .desktop
+    // file.
+    const std::string user_data_dir =
+        command_line.GetSwitchValueNative(switches::kUserDataDir);
+    params.wm_class_name += " (" + user_data_dir + ")";
+  }
   const char kX11WindowRoleBrowser[] = "browser";
   const char kX11WindowRolePopup[] = "pop-up";
-  params.wm_role_name = browser_view()->browser()->is_type_tabbed()
-                            ? std::string(kX11WindowRoleBrowser)
-                            : std::string(kX11WindowRolePopup);
+  params.wm_role_name = browser_view()->browser()->is_type_tabbed() ?
+      std::string(kX11WindowRoleBrowser) : std::string(kX11WindowRolePopup);
   params.remove_standard_frame = UseCustomFrame();
 
   return params;