Refactor app_list_util.h into AppListService abstract base.

chrome/browser/ui/cocoa/app_list/app_list_controller_cocoa.mm

Index: chrome/browser/ui/cocoa/app_list/app_list_controller_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/app_list/app_list_controller_cocoa.mm b/chrome/browser/ui/cocoa/app_list/app_list_controller_cocoa.mm
index d568b502f7339226ba9e61a663884a3c5b48646a..80d33f546bf6f6cec03fe52a0d15ecf025f32807 100644
--- a/chrome/browser/ui/cocoa/app_list/app_list_controller_cocoa.mm
+++ b/chrome/browser/ui/cocoa/app_list/app_list_controller_cocoa.mm
@@ -5,10 +5,11 @@
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_nsobject.h"
+#include "base/memory/singleton.h"
 #include "base/message_loop.h"
 #include "base/time.h"
 #include "base/timer.h"
-#include "chrome/browser/ui/app_list/app_list_util.h"
+#include "chrome/browser/ui/app_list/app_list_service_cocoa.h"
 #include "ui/app_list/app_list_view_delegate.h"
 #import "ui/app_list/cocoa/apps_grid_controller.h"
 #import "ui/app_list/cocoa/app_list_window_controller.h"
@@ -21,26 +22,32 @@ namespace {
 
 // The AppListController class manages global resources needed for the app
 // list to operate, and controls when the app list is opened and closed.
-class AppListController {
+class AppListControllerCocoa : public AppListServiceCocoa {
  public:
-  AppListController() {}
-  ~AppListController() {}
+  virtual ~AppListControllerCocoa() {}
+
+  static AppListControllerCocoa* GetInstance() {
+    return Singleton<AppListControllerCocoa>::get();
+  }
 
   void CreateAppList();
-  void ShowAppList();
-  void DismissAppList();
+
+  // AppListService overrides:
+  virtual void ShowAppList(Profile* profile) OVERRIDE;
+  virtual void DismissAppList() OVERRIDE;
 
  private:
+  AppListControllerCocoa() {}
+
   scoped_nsobject<AppListWindowController> window_controller_;
-  base::OneShotTimer<AppListController> timer_;
+  base::OneShotTimer<AppListControllerCocoa> timer_;
 
-  DISALLOW_COPY_AND_ASSIGN(AppListController);
-};
+  friend struct DefaultSingletonTraits<AppListControllerCocoa>;
 
-base::LazyInstance<AppListController>::Leaky g_app_list_controller =
-    LAZY_INSTANCE_INITIALIZER;
+  DISALLOW_COPY_AND_ASSIGN(AppListControllerCocoa);
+};
 
-void AppListController::CreateAppList() {
+void AppListControllerCocoa::CreateAppList() {
   // TODO(tapted): Create our own AppListViewDelegate subtype, and use it here.
   scoped_ptr<app_list::AppListViewDelegate> delegate;
   scoped_nsobject<AppsGridController> content(
@@ -49,7 +56,7 @@ void AppListController::CreateAppList() {
       [[AppListWindowController alloc] initWithGridController:content]);
 }
 
-void AppListController::ShowAppList() {
+void AppListControllerCocoa::ShowAppList(Profile* profile) {
   const int kLifetimeIntervalMS = 1000;
 
   if (!window_controller_)
@@ -57,11 +64,11 @@ void AppListController::ShowAppList() {
 
   timer_.Start(FROM_HERE,
                base::TimeDelta::FromMilliseconds(kLifetimeIntervalMS), this,
-               &AppListController::DismissAppList);
+               &AppListControllerCocoa::DismissAppList);
   [[window_controller_ window] makeKeyAndOrderFront:nil];
 }
 
-void AppListController::DismissAppList() {
+void AppListControllerCocoa::DismissAppList() {
   if (!window_controller_)
     return;
 
@@ -71,33 +78,7 @@ void AppListController::DismissAppList() {
 
 }  // namespace
 
-
-namespace chrome {
-
-void InitAppList(Profile* profile) {
-  // TODO(tapted): AppList warmup code coes here.
-}
-
-void ShowAppList(Profile* profile) {
-  g_app_list_controller.Get().ShowAppList();
-}
-
-void NotifyAppListOfBeginExtensionInstall(
-    Profile* profile,
-    const std::string& extension_id,
-    const std::string& extension_name,
-    const gfx::ImageSkia& installing_icon) {
-}
-
-void NotifyAppListOfDownloadProgress(
-    Profile* profile,
-    const std::string& extension_id,
-    int percent_downloaded) {
-}
-
-void NotifyAppListOfExtensionInstallFailure(
-    Profile* profile,
-    const std::string& extension_id) {
+// static
+AppListServiceCocoa* AppListServiceCocoa::GetInstance() {
+  return AppListControllerCocoa::GetInstance();
 }
-
-}  // namespace chrome