Add a command-line switch "disable-desktop-shortcuts" to disable profile desktop shortcuts handling

chrome/browser/profiles/profile_manager.cc

Index: chrome/browser/profiles/profile_manager.cc
===================================================================
--- chrome/browser/profiles/profile_manager.cc	(revision 120775)
+++ chrome/browser/profiles/profile_manager.cc	(working copy)
@@ -699,7 +699,9 @@
 #if defined(OS_WIN)
     BrowserDistribution* dist = BrowserDistribution::GetDistribution();
     ProfileShortcutManagerWin* shortcut_manager = CreateShortcutManager();
-    if (dist && dist->CanCreateDesktopShortcuts() && shortcut_manager) {
+    const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+    if (dist && dist->CanCreateDesktopShortcuts() && shortcut_manager &&
+        !command_line.HasSwitch(switches::kDisableDesktopShortcuts)) {
       profile_shortcut_manager_.reset(shortcut_manager);
       profile_info_cache_->AddObserver(profile_shortcut_manager_.get());
     }