Add Vector2d classes that represent offsets, instead of using Point.

content/browser/web_contents/web_contents_view_win.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_WEB_CONTENTS_WEB_CONTENTS_VIEW_WIN_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_WIN_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer.h"
@@ skipping 70 matching lines @@
   virtual void ShowPopupMenu(const gfx::Rect& bounds,
                              int item_height,
                              double item_font_size,
                              int selected_item,
                              const std::vector<WebMenuItem>& items,
                              bool right_aligned,
                              bool allow_multiple_selection) OVERRIDE;
   virtual void StartDragging(const WebDropData& drop_data,
                              WebKit::WebDragOperationsMask operations,
                              const gfx::ImageSkia& image,
-                             const gfx::Point& image_offset) OVERRIDE;
+                             const gfx::Vector2d& image_offset) OVERRIDE;
   virtual void UpdateDragCursor(WebKit::WebDragOperation operation) OVERRIDE;
   virtual void GotFocus() OVERRIDE;
   virtual void TakeFocus(bool reverse) OVERRIDE;
 
   WebContentsImpl* web_contents() const { return web_contents_; }
 
  private:
   void EndDragging();
   void CloseTab();
 
@@ skipping 35 matching lines @@
   scoped_refptr<WebContentsDragWin> drag_handler_;
 
   scoped_ptr<ui::HWNDMessageFilter> hwnd_message_filter_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsViewWin);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_WIN_H_