Differentiate invisible cursor mode and disabled mouse events mode.

content/browser/renderer_host/render_view_host_impl.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_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 477 matching lines @@
   void OnDidStartLoading();
   void OnDidStopLoading();
   void OnDidChangeLoadProgress(double load_progress);
   void OnDidDisownOpener();
   void OnDocumentAvailableInMainFrame();
   void OnDocumentOnLoadCompletedInMainFrame(int32 page_id);
   void OnContextMenu(const ContextMenuParams& params);
   void OnToggleFullscreen(bool enter_fullscreen);
   void OnOpenURL(const ViewHostMsg_OpenURL_Params& params);
   void OnDidContentsPreferredSizeChange(const gfx::Size& new_size);
+  void OnDidChangeScrollOffset();
   void OnDidChangeScrollbarsForMainFrame(bool has_horizontal_scrollbar,
                                          bool has_vertical_scrollbar);
   void OnDidChangeScrollOffsetPinningForMainFrame(bool is_pinned_to_left,
                                                   bool is_pinned_to_right);
   void OnDidChangeNumWheelEvents(int count);
   void OnSelectionChanged(const string16& text,
                           size_t offset,
                           const ui::Range& range);
   void OnSelectionBoundsChanged(const gfx::Rect& start_rect,
                                 WebKit::WebTextDirection start_direction,
@@ skipping 184 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_