Change NotifyAppList*() functions into observers on a ProfileKeyedService.

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 85c362d2163440a42ece6277be03ec15a5018bbd..b36a5136a829a7826a5ac9f323fb7e8ca65f5a5a 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
@@ -139,30 +139,4 @@ void ShowAppList(Profile* profile) {
   g_app_list_controller.Get().ShowAppList(profile);
 }
 
-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) {
-}
-
-void DismissAppList() {
-  g_app_list_controller.Get().DismissAppList();
-}
-
-bool IsAppListVisible() {
-  return g_app_list_controller.Get().IsAppListVisible();
-}
-
 }  // namespace chrome