Revert of [Android] Use UIResource for overscroll glow

ui/base/android/system_ui_resource_manager.h

Index: ui/base/android/system_ui_resource_manager.h
diff --git a/ui/base/android/system_ui_resource_manager.h b/ui/base/android/system_ui_resource_manager.h
deleted file mode 100644
index 03a112d5363c9293e1310266d5c819527e30a8c2..0000000000000000000000000000000000000000
--- a/ui/base/android/system_ui_resource_manager.h
+++ /dev/null
@@ -1,41 +0,0 @@
-// Copyright 2014 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 UI_BASE_ANDROID_SYSTEM_UI_RESOURCE_MANAGER_H_
-#define UI_BASE_ANDROID_SYSTEM_UI_RESOURCE_MANAGER_H_
-
-#include "cc/resources/ui_resource_client.h"
-#include "ui/base/ui_base_export.h"
-
-namespace ui {
-
-// Interface for loading and accessing shared system UI resources.
-class UI_BASE_EXPORT SystemUIResourceManager {
- public:
-  enum ResourceType {
-    OVERSCROLL_EDGE = 0,
-    OVERSCROLL_GLOW,
-    RESOURCE_TYPE_FIRST = OVERSCROLL_EDGE,
-    RESOURCE_TYPE_LAST = OVERSCROLL_GLOW
-  };
-
-  virtual ~SystemUIResourceManager() {}
-
-  // Optionally trigger bitmap loading for a given |resource|, if necessary.
-  // Note that this operation may be asynchronous, and subsequent queries to
-  // |GetUIResourceId()| will yield a valid result only after loading finishes.
-  // This method is particularly useful for idly loading a resource before an
-  // explicit cc::UIResourceId is required. Repeated calls will be ignored.
-  virtual void PreloadResource(ResourceType resource) = 0;
-
-  // Return the resource id associated with |resource|. If loading hasn't yet
-  // begun for the given |resource|, it will be triggered immediately. If
-  // loading is asynchronous, 0 will be returned until loading has finished, and
-  // the caller is responsible for re-querying until a valid id is returned.
-  virtual cc::UIResourceId GetUIResourceId(ResourceType resource) = 0;
-};
-
-}  // namespace ui
-
-#endif  // UI_BASE_ANDROID_SYSTEM_UI_RESOURCE_MANAGER_H_