android: Use UIResource for overscroll glow

content/browser/android/system_ui_resource_manager_impl.h

+// 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 CONTENT_BROWSER_ANDROID_SYSTEM_UI_RESOURCE_MANAGER_IMPL_H_
+#define CONTENT_BROWSER_ANDROID_SYSTEM_UI_RESOURCE_MANAGER_IMPL_H_
+
+#include "base/basictypes.h"
+#include "base/memory/weak_ptr.h"
+#include "ui/base/android/system_ui_resource.h"
+#include "ui/base/android/system_ui_resource_manager.h"
+
+class SkBitmap;
+
+namespace cc {
+class UIResourceBitmap;
+}
+
+namespace content {
+
+class SystemUIResourceManagerImpl : public ui::SystemUIResourceManager {
+ public:
+  SystemUIResourceManagerImpl();
+
+ protected:
+  virtual void BuildResource(ui::SystemUIResource::Type type) OVERRIDE;
+
+ private:
+  static void LoadBitmap(ui::SystemUIResource::Type, SkBitmap* bitmap_holder);
+  void OnFinishedLoadBitmap(ui::SystemUIResource::Type,
+                            SkBitmap* bitmap_holder);
+
+  base::WeakPtrFactory<SystemUIResourceManagerImpl> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(SystemUIResourceManagerImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_SYSTEM_UI_RESOURCE_MANAGER_IMPL_H_