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

content/browser/web_contents/web_contents_drag_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_DRAG_WIN_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_DRAG_WIN_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 31 matching lines @@
   WebContentsDragWin(gfx::NativeWindow source_window,
                      content::WebContents* web_contents,
                      WebDragDest* drag_dest,
                      const base::Callback<void()>& drag_end_callback);
   virtual ~WebContentsDragWin();
 
   // Called on UI thread.
   void StartDragging(const WebDropData& drop_data,
                      WebKit::WebDragOperationsMask ops,
                      const gfx::ImageSkia& image,
-                     const gfx::Point& image_offset);
+                     const gfx::Vector2d& image_offset);
   void CancelDrag();
 
   // DataObjectImpl::Observer implementation.
   // Called on drag-and-drop thread.
   virtual void OnWaitForData();
   virtual void OnDataObjectDisposed();
 
  private:
   // Called on either UI thread or drag-and-drop thread.
   void PrepareDragForDownload(const WebDropData& drop_data,
                               ui::OSExchangeData* data,
                               const GURL& page_url,
                               const std::string& page_encoding);
   void PrepareDragForFileContents(const WebDropData& drop_data,
                                   ui::OSExchangeData* data);
   void PrepareDragForUrl(const WebDropData& drop_data,
                          ui::OSExchangeData* data);
   // Returns false if the source window becomes invalid when the drag ends.
   // This could happen when the window gets destroyed when the drag is still in
   // progress. No further processing should be done beyond this return point
   // because the instance has been destroyed.
   bool DoDragging(const WebDropData& drop_data,
                   WebKit::WebDragOperationsMask ops,
                   const GURL& page_url,
                   const std::string& page_encoding,
                   const gfx::ImageSkia& image,
-                  const gfx::Point& image_offset);
+                  const gfx::Vector2d& image_offset);
 
   // Called on drag-and-drop thread.
   void StartBackgroundDragging(const WebDropData& drop_data,
                                WebKit::WebDragOperationsMask ops,
                                const GURL& page_url,
                                const std::string& page_encoding,
                                const gfx::ImageSkia& image,
-                               const gfx::Point& image_offset);
+                               const gfx::Vector2d& image_offset);
   // Called on UI thread.
   void EndDragging();
   void CloseThread();
 
   // For debug check only. Access only on drag-and-drop thread.
   base::PlatformThreadId drag_drop_thread_id_;
 
   // All the member variables below are accessed on UI thread.
 
   gfx::NativeWindow source_window_;
@@ skipping 11 matching lines @@
 
   // The flag to guard that EndDragging is not called twice.
   bool drag_ended_;
 
   base::Callback<void()> drag_end_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsDragWin);
 };
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_DRAG_WIN_H_