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

content/browser/renderer_host/render_widget_host_view_android.h

 // Copyright (c) 2012 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_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 
 #include <map>
 #include <queue>
 
@@ skipping 31 matching lines @@
 }
 
 namespace blink {
 class WebExternalTextureLayer;
 class WebTouchEvent;
 class WebMouseEvent;
 }
 
 namespace content {
 class ContentViewCoreImpl;
-class OverscrollGlow;
+class OverscrollControllerAndroid;
 class RenderWidgetHost;
 class RenderWidgetHostImpl;
 struct DidOverscrollParams;
 struct NativeWebKeyboardEvent;
 
 class ReadbackRequest {
  public:
   explicit ReadbackRequest(
       float scale,
       SkColorType color_type,
@@ skipping 142 matching lines @@
   // DelegatedFrameEvictor implementation
   virtual void EvictDelegatedFrame() override;
 
   virtual SkColorType PreferredReadbackFormat() override;
 
   // GestureTextSelectorClient implementation.
   virtual void ShowSelectionHandlesAutomatically() override;
   virtual void SelectRange(float x1, float y1, float x2, float y2) override;
   virtual void LongPress(base::TimeTicks time, float x, float y) override;
 
+  // TouchSelectionControllerClient implementation.
+  virtual bool SupportsAnimation() const override;
+  virtual void SetNeedsAnimate() override;
+  virtual void MoveCaret(const gfx::PointF& position) override;
+  virtual void SelectBetweenCoordinates(const gfx::PointF& start,
+                                        const gfx::PointF& end) override;
+  virtual void OnSelectionEvent(SelectionEventType event,
+                                const gfx::PointF& anchor_position) override;
+  virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() override;
+
   // Non-virtual methods
   void SetContentViewCore(ContentViewCoreImpl* content_view_core);
   SkColor GetCachedBackgroundColor() const;
   void SendKeyEvent(const NativeWebKeyboardEvent& event);
   void SendMouseEvent(const blink::WebMouseEvent& event);
   void SendMouseWheelEvent(const blink::WebMouseWheelEvent& event);
   void SendGestureEvent(const blink::WebGestureEvent& event);
 
   void OnTextInputStateChanged(const ViewHostMsg_TextInputState_Params& params);
   void OnDidChangeBodyBackgroundColor(SkColor color);
@@ skipping 33 matching lines @@
 
   void SetOverlayVideoMode(bool enabled);
 
   typedef base::Callback<
       void(const base::string16& content, int start_offset, int end_offset)>
       TextSurroundingSelectionCallback;
   void SetTextSurroundingSelectionCallback(
       const TextSurroundingSelectionCallback& callback);
 
  private:
-  // TouchSelectionControllerClient implementation.
-  virtual bool SupportsAnimation() const override;
-  virtual void SetNeedsAnimate() override;
-  virtual void MoveCaret(const gfx::PointF& position) override;
-  virtual void SelectBetweenCoordinates(const gfx::PointF& start,
-                                        const gfx::PointF& end) override;
-  virtual void OnSelectionEvent(SelectionEventType event,
-                                const gfx::PointF& anchor_position) override;
-  virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() override;
-
   void RunAckCallbacks();
 
   void DestroyDelegatedContent();
   void SwapDelegatedFrame(uint32 output_surface_id,
                           scoped_ptr<cc::DelegatedFrameData> frame_data);
   void SendDelegatedFrameAck(uint32 output_surface_id);
   void SendReturnedDelegatedResources(uint32 output_surface_id);
 
   void OnFrameMetadataUpdated(
       const cc::CompositorFrameMetadata& frame_metadata);
@@ skipping 79 matching lines @@
 
   // The most recent content size that was pushed to the texture layer.
   gfx::Size content_size_in_layer_;
 
   // The output surface id of the last received frame.
   uint32_t last_output_surface_id_;
 
 
   std::queue<base::Closure> ack_callbacks_;
 
-  const bool overscroll_effect_enabled_;
-  // Used to render overscroll overlays.
-  scoped_ptr<OverscrollGlow> overscroll_effect_;
+  // Used to control and render overscroll-related effects.
+  const bool overscroll_controller_enabled_;
+  scoped_ptr<OverscrollControllerAndroid> overscroll_controller_;
 
   // Provides gesture synthesis given a stream of touch events (derived from
   // Android MotionEvent's) and touch event acks.
   ui::FilteredGestureProvider gesture_provider_;
 
   // Handles gesture based text selection
   GestureTextSelector gesture_text_selector_;
 
   // Manages selection handle rendering and manipulation.
   // This will always be NULL if |content_view_core_| is NULL.
@@ skipping 30 matching lines @@
   gfx::Vector2dF last_scroll_offset_;
 
   base::WeakPtrFactory<RenderWidgetHostViewAndroid> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_