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

ui/views/widget/native_widget_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 "ui/views/widget/native_widget_win.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include <algorithm>
@@ skipping 453 matching lines @@
 
 gfx::Rect NativeWidgetWin::GetWorkAreaBoundsInScreen() const {
   return gfx::Screen::GetNativeScreen()->GetDisplayNearestWindow(
       GetNativeView()).work_area();
 }
 
 void NativeWidgetWin::SetInactiveRenderingDisabled(bool value) {
 }
 
 Widget::MoveLoopResult NativeWidgetWin::RunMoveLoop(
-    const gfx::Point& drag_offset) {
+    const gfx::Vector2d& drag_offset) {
   return message_handler_->RunMoveLoop(drag_offset) ?
       Widget::MOVE_LOOP_SUCCESSFUL : Widget::MOVE_LOOP_CANCELED;
 }
 
 void NativeWidgetWin::EndMoveLoop() {
   message_handler_->EndMoveLoop();
 }
 
 void NativeWidgetWin::SetVisibilityChangedAnimationsEnabled(bool value) {
   message_handler_->SetVisibilityChangedAnimationsEnabled(value);
@@ skipping 532 matching lines @@
 // static
 bool NativeWidgetPrivate::IsTouchDown() {
   // This currently isn't necessary because we're not generating touch events on
   // windows.  When we do, this will need to be updated.
   return false;
 }
 
 }  // namespace internal
 
 }  // namespace views