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

ui/views/widget/desktop_native_widget_aura.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/desktop_native_widget_aura.h"
 
 #include "base/bind.h"
 #include "ui/aura/client/stacking_client.h"
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/root_window.h"
@@ skipping 382 matching lines @@
 void DesktopNativeWidgetAura::SetInactiveRenderingDisabled(bool value) {
   if (!value) {
     active_window_observer_.reset();
   } else {
     active_window_observer_.reset(
         new NativeWidgetAuraWindowObserver(window_, native_widget_delegate_));
   }
 }
 
 Widget::MoveLoopResult DesktopNativeWidgetAura::RunMoveLoop(
-      const gfx::Point& drag_offset) {
+      const gfx::Vector2d& drag_offset) {
   return desktop_root_window_host_->RunMoveLoop(drag_offset);
 }
 
 void DesktopNativeWidgetAura::EndMoveLoop() {
   desktop_root_window_host_->EndMoveLoop();
 }
 
 void DesktopNativeWidgetAura::SetVisibilityChangedAnimationsEnabled(
     bool value) {
   desktop_root_window_host_->SetVisibilityChangedAnimationsEnabled(value);
@@ skipping 152 matching lines @@
     GetWidget()->non_client_view()->SchedulePaint();
 }
 
 void DesktopNativeWidgetAura::OnLostActive() {
   native_widget_delegate_->OnNativeWidgetActivationChanged(false);
   if (IsVisible() && GetWidget()->non_client_view())
     GetWidget()->non_client_view()->SchedulePaint();
 }
 
 }  // namespace views