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

chrome/browser/ui/views/omnibox/omnibox_view_win.cc

 // 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.
 
 #include "chrome/browser/ui/views/omnibox/omnibox_view_win.h"
 
 #include <algorithm>
 #include <locale>
 #include <string>
 
@@ skipping 103 matching lines @@
   }
   virtual ~AutocompleteEditState() {}
 
   const OmniboxEditModel::State model_state;
   const OmniboxViewWin::State view_state;
 };
 
 // Returns true if the current point is far enough from the origin that it
 // would be considered a drag.
 bool IsDrag(const POINT& origin, const POINT& current) {
-  return views::View::ExceededDragThreshold(current.x - origin.x,
-                                            current.y - origin.y);
+  return views::View::ExceededDragThreshold(
+      gfx::Point(current) - gfx::Point(origin));
 }
 
 // Write |text| and an optional |url| to the clipboard.
 void DoCopy(const string16& text, const GURL* url) {
   ui::ScopedClipboardWriter scw(ui::Clipboard::GetForCurrentThread(),
                                 ui::Clipboard::BUFFER_STANDARD);
   scw.WriteText(text);
   if (url != NULL)
     scw.WriteBookmark(text, url->spec());
 }
@@ skipping 2614 matching lines @@
   return (rect.left - client_rect.left) + (client_rect.right - rect.right);
 }
 
 int OmniboxViewWin::WidthNeededToDisplay(const string16& text) const {
   // Use font_.GetStringWidth() instead of
   // PosFromChar(location_entry_->GetTextLength()) because PosFromChar() is
   // apparently buggy. In both LTR UI and RTL UI with left-to-right layout,
   // PosFromChar(i) might return 0 when i is greater than 1.
   return font_.GetStringWidth(text) + GetHorizontalMargin();
 }