Remove old HTML app list start page.

chrome/browser/ui/app_list/recommended_apps_observer.h

Index: chrome/browser/ui/app_list/recommended_apps_observer.h
diff --git a/chrome/browser/ui/app_list/recommended_apps_observer.h b/chrome/browser/ui/app_list/recommended_apps_observer.h
deleted file mode 100644
index ab8e76a13e319a1cfd40303ba0f2109307c925b7..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/app_list/recommended_apps_observer.h
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2013 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.
-
-#ifndef CHROME_BROWSER_UI_APP_LIST_RECOMMENDED_APPS_OBSERVER_H_
-#define CHROME_BROWSER_UI_APP_LIST_RECOMMENDED_APPS_OBSERVER_H_
-
-namespace app_list {
-
-// An interface for observing RecommendedApps change.
-class RecommendedAppsObserver {
- public:
-  // Invoked when RecommendedApps changed.
-  virtual void OnRecommendedAppsChanged() = 0;
-
- protected:
-  virtual ~RecommendedAppsObserver() {}
-};
-
-}  // namespace app_list
-
-#endif  // CHROME_BROWSER_UI_APP_LIST_RECOMMENDED_APPS_OBSERVER_H_