Tiimer based phase info generated for mouse wheel events.

content/browser/renderer_host/render_widget_host_view_base.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_BASE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 398 matching lines @@
   // TextInputManager if it is destroyed or if the TextInputManager itself is
   // destroyed. The unregistration of the RWHV from TextInputManager is
   // necessary and must be done by explicitly calling
   // TextInputManager::Unregister.
   // It is safer to use this method rather than directly dereferencing
   // |text_input_manager_|.
   TextInputManager* GetTextInputManager();
 
   bool is_fullscreen() { return is_fullscreen_; }
 
+  bool wheel_scroll_latching_enabled() {
+    return wheel_scroll_latching_enabled_;
+  }
+
   // Exposed for testing.
   virtual bool IsChildFrameForTesting() const;
   virtual cc::SurfaceId SurfaceIdForTesting() const;
 
  protected:
   // Interface class only, do not construct.
   RenderWidgetHostViewBase();
 
   void NotifyObserversAboutShutdown();
 
@@ skipping 19 matching lines @@
 
   // The orientation of the display the renderer is currently on.
   display::Display::Rotation current_display_rotation_;
 
   // A reference to current TextInputManager instance this RWHV is registered
   // with. This is initially nullptr until the first time the view calls
   // GetTextInputManager(). It also becomes nullptr when TextInputManager is
   // destroyed before the RWHV is destroyed.
   TextInputManager* text_input_manager_;
 
+  const bool wheel_scroll_latching_enabled_;
+
  private:
   void FlushInput();
 
   gfx::Rect current_display_area_;
 
   uint32_t renderer_frame_number_;
 
   base::OneShotTimer flush_input_timer_;
 
   base::ObserverList<RenderWidgetHostViewBaseObserver> observers_;
 
   base::WeakPtrFactory<RenderWidgetHostViewBase> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewBase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_