Auto hide app list on Windows when it loses focus.

chrome/browser/ui/app_list/app_list_controller.cc

 // 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.
 
 #include "chrome/browser/ui/app_list/app_list_controller.h"
 
 #include "build/build_config.h"
 
+AppListControllerDelegate::~AppListControllerDelegate() {}
+
+void AppListControllerDelegate::ViewClosing() {}
+
+void AppListControllerDelegate::ViewActivationChanged(bool active) {}
+
+bool AppListControllerDelegate::IsAppPinned(const std::string& extension_id) {
+  return false;
+}
+
+void AppListControllerDelegate::PinApp(const std::string& extension_id) {}
+
+void AppListControllerDelegate::UnpinApp(const std::string& extension_id) {}
+
+void AppListControllerDelegate::ShowCreateShortcutsDialog(
+    Profile* profile,
+    const std::string& extension_id) {}
+
 namespace app_list_controller {
 
 #if !defined(OS_WIN)
 // Default implementation for ports which do not have this implemented.
 void ShowAppList() {}
 #endif
 
 }  // namespace app_list_controller