Introduce App Launcher for Windows.

chrome/browser/ui/startup/startup_browser_creator_impl.cc

Index: chrome/browser/ui/startup/startup_browser_creator_impl.cc
diff --git a/chrome/browser/ui/startup/startup_browser_creator_impl.cc b/chrome/browser/ui/startup/startup_browser_creator_impl.cc
index 61f6d69326e57659657f7b97e667960d4e1112db..861ec28d8fac2975ad1dfac1b89cab46e7cd4f7c 100644
--- a/chrome/browser/ui/startup/startup_browser_creator_impl.cc
+++ b/chrome/browser/ui/startup/startup_browser_creator_impl.cc
@@ -44,6 +44,7 @@
 #include "chrome/browser/sessions/session_service.h"
 #include "chrome/browser/sessions/session_service_factory.h"
 #include "chrome/browser/shell_integration.h"
+#include "chrome/browser/ui/app_list/app_list_controller.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_list.h"
@@ -327,6 +328,11 @@ bool StartupBrowserCreatorImpl::Launch(Profile* profile,
     }
   }
 
+  if (command_line_.HasSwitch(switches::kShowAppList)) {
+    app_list_controller::ShowAppList();
+    return true;
+  }
+
   // Open the required browser windows and tabs. First, see if
   // we're being run as an application window. If so, the user
   // opened an app shortcut.  Don't restore tabs or open initial