Show an icon to launch Chrome (chrome_app) on the Windows App Launcher.

chrome/browser/ui/views/app_list/app_list_controller_win.cc

Index: chrome/browser/ui/views/app_list/app_list_controller_win.cc
diff --git a/chrome/browser/ui/views/app_list/app_list_controller_win.cc b/chrome/browser/ui/views/app_list/app_list_controller_win.cc
index 530dfae0b251082fe44a527ca9af32a4bcd79464..5b357c39a47a61731f9b8048c6766fd39c66b6cb 100644
--- a/chrome/browser/ui/views/app_list/app_list_controller_win.cc
+++ b/chrome/browser/ui/views/app_list/app_list_controller_win.cc
@@ -276,7 +276,9 @@ void AppListControllerDelegateWin::LaunchApp(
   //                     browser; otherwise launch in chrome
   //   - v1 packaged apps : open in an app window
   //   - v2 packaged apps : launch normally
-  if (extension->is_hosted_app()) {
+  // Note: a special case, the ChromeApp, should always launch Chrome.
+  if (extension->is_hosted_app() &&
+      extension->id() != extension_misc::kChromeAppId) {
     content::BrowserThread::PostTask(
         content::BrowserThread::FILE,
         FROM_HERE,