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

chrome/browser/ui/views/apps/native_app_window_views.cc

 // Copyright 2013 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/ui/views/apps/native_app_window_views.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/shell_integration.h"
 #include "chrome/browser/ui/views/extensions/extension_keybinding_registry_views.h"
 #include "chrome/browser/ui/views/extensions/shell_window_frame_view.h"
+#include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "extensions/common/draggable_region.h"
 #include "ui/views/controls/webview/webview.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/non_client_view.h"
 
 #if defined(OS_WIN)
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/web_applications/web_app_ui.h"
-#include "chrome/browser/web_applications/web_app.h"
 #include "chrome/browser/web_applications/web_app_win.h"
 #include "ui/base/win/shell.h"
 #include "ui/views/win/hwnd_util.h"
 #endif
 
 #if defined(USE_ASH)
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
 #include "ash/wm/custom_frame_view_ash.h"
 #include "ash/wm/panels/panel_frame_view.h"
@@ skipping 106 matching lines @@
   OnViewWasResized();
   window_->AddObserver(this);
 }
 
 NativeAppWindowViews::~NativeAppWindowViews() {
   web_view_->SetWebContents(NULL);
 }
 
 void NativeAppWindowViews::InitializeDefaultWindow(
     const ShellWindow::CreateParams& create_params) {
+  std::string app_name =
+      web_app::GenerateApplicationNameFromExtensionId(extension()->id());
+
   views::Widget::InitParams init_params(views::Widget::InitParams::TYPE_WINDOW);
   init_params.delegate = this;
   init_params.remove_standard_frame = ShouldUseChromeStyleFrame();
   init_params.use_system_default_icon = true;
   // TODO(erg): Conceptually, these are toplevel windows, but we theoretically
   // could plumb context through to here in some cases.
   init_params.top_level = true;
   gfx::Rect window_bounds = create_params.bounds;
   bool position_specified =
       window_bounds.x() != INT_MIN && window_bounds.y() != INT_MIN;
   if (position_specified && !window_bounds.IsEmpty())
     init_params.bounds = window_bounds;
+
+#if defined(OS_LINUX)
+  // Set up a custom WM_CLASS for app windows. This allows task switchers in
+  // X11 environments to distinguish them from main browser windows.
+  init_params.wm_class_name = web_app::GetWMClassFromAppName(app_name);
+  init_params.wm_class_class = ShellIntegration::GetProgramClassName();
+#endif
+
   window_->Init(init_params);
 
   gfx::Rect adjusted_bounds = window_bounds;
   adjusted_bounds.Inset(-GetFrameInsets());
   // Center window if no position was specified.
   if (!position_specified)
     window_->CenterWindow(adjusted_bounds.size());
   else if (!adjusted_bounds.IsEmpty() && adjusted_bounds != window_bounds)
     window_->SetBounds(adjusted_bounds);
 
   // Register accelarators supported by app windows.
   // TODO(jeremya/stevenjb): should these be registered for panels too?
   views::FocusManager* focus_manager = GetFocusManager();
   const std::map<ui::Accelerator, int>& accelerator_table =
       GetAcceleratorTable();
   for (std::map<ui::Accelerator, int>::const_iterator iter =
            accelerator_table.begin();
        iter != accelerator_table.end(); ++iter) {
     focus_manager->RegisterAccelerator(
         iter->first, ui::AcceleratorManager::kNormalPriority, this);
   }
 
 #if defined(OS_WIN)
-  string16 app_name = UTF8ToWide(
-      web_app::GenerateApplicationNameFromExtensionId(extension()->id()));
+  string16 app_name_wide = UTF8ToWide(app_name);
   HWND hwnd = GetNativeAppWindowHWND();
   ui::win::SetAppIdForWindow(ShellIntegration::GetAppModelIdForProfile(
-      app_name, profile()->GetPath()), hwnd);
+      app_name_wide, profile()->GetPath()), hwnd);
 
   web_app::UpdateShortcutInfoAndIconForApp(
       *extension(), profile(),
       base::Bind(&NativeAppWindowViews::OnShortcutInfoLoaded,
                  weak_ptr_factory_.GetWeakPtr()));
 #endif
 }
 
 #if defined(OS_WIN)
 void NativeAppWindowViews::OnShortcutInfoLoaded(
@@ skipping 557 matching lines @@
 
 void NativeAppWindowViews::HandleKeyboardEvent(
     const content::NativeWebKeyboardEvent& event) {
   unhandled_keyboard_event_handler_.HandleKeyboardEvent(event,
                                                         GetFocusManager());
 }
 
 void NativeAppWindowViews::RenderViewHostChanged() {
   OnViewWasResized();
 }