[Android] Add a native pull-to-refresh overscroll effect

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/android/jni_android.h"
 #include "base/basictypes.h"
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
 #include "ui/base/android/system_ui_resource_manager.h"
 
 class SkBitmap;
 
 namespace cc {
 class UIResourceBitmap;
 }
 
 namespace content {
 
 class UIResourceProvider;
 
 class CONTENT_EXPORT SystemUIResourceManagerImpl
     : public ui::SystemUIResourceManager {
  public:
   explicit SystemUIResourceManagerImpl(
       UIResourceProvider* ui_resource_provider);
-  virtual ~SystemUIResourceManagerImpl();
+  ~SystemUIResourceManagerImpl() override;
 
-  virtual void PreloadResource(ResourceType type) override;
-  virtual cc::UIResourceId GetUIResourceId(ResourceType type) override;
+  void PreloadResource(ui::SystemUIResourceType type) override;
+  cc::UIResourceId GetUIResourceId(ui::SystemUIResourceType type) override;
+
+  static bool RegisterUIResources(JNIEnv* env);
 
  private:
   friend class TestSystemUIResourceManagerImpl;
   class Entry;
 
   // Start loading the resource bitmap.  virtual for testing.
-  virtual void BuildResource(ResourceType type);
+  virtual void BuildResource(ui::SystemUIResourceType type);
 
-  Entry* GetEntry(ResourceType type);
-  void OnFinishedLoadBitmap(ResourceType, SkBitmap* bitmap_holder);
+  Entry* GetEntry(ui::SystemUIResourceType type);
+  void OnFinishedLoadBitmap(ui::SystemUIResourceType, SkBitmap* bitmap_holder);
 
-  scoped_ptr<Entry> resource_map_[RESOURCE_TYPE_LAST + 1];
+  scoped_ptr<Entry> resource_map_[ui::SYSTEM_UI_RESOURCE_TYPE_LAST + 1];
   UIResourceProvider* ui_resource_provider_;
 
   base::WeakPtrFactory<SystemUIResourceManagerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemUIResourceManagerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_SYSTEM_UI_RESOURCE_MANAGER_IMPL_H_