On Linux, automatically create app shortcuts on install or update.

chrome/browser/shell_integration.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_SHELL_INTEGRATION_H_
 #define CHROME_BROWSER_SHELL_INTEGRATION_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 99 matching lines @@
     ShortcutLocations();
 
     bool on_desktop;
     bool in_applications_menu;
 
     // For Windows, this refers to quick launch bar prior to Win7. In Win7,
     // this means "pin to taskbar". For Mac/Linux, this could be used for
     // Mac dock or the gnome/kde application launcher. However, those are not
     // implemented yet.
     bool in_quick_launch_bar;
+
+    // For Linux, this refers to a shortcut which the system knows about (for
+    // the purpose of identifying windows and giving them the correct
+    // title/icon), but which does not show up in menus or search results.
+    // Ignored if in_applications_menu == true.
+    bool hidden;
   };
 
   // Data that needs to be passed between the app launcher stub and Chrome.
   struct AppModeInfo {
   };
   static void SetAppModeInfo(const AppModeInfo* info);
   static const AppModeInfo* AppModeInfo();
 
   // Is the current instance of Chrome running in App mode.
   bool IsRunningInAppMode();
@@ skipping 193 matching lines @@
     // Set Chrome as the default handler for this protocol.
     virtual bool SetAsDefault(bool interactive_permitted) OVERRIDE;
 
     std::string protocol_;
 
     DISALLOW_COPY_AND_ASSIGN(DefaultProtocolClientWorker);
   };
 };
 
 #endif  // CHROME_BROWSER_SHELL_INTEGRATION_H_