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

chrome/browser/ui/views/download/download_item_view.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/download/download_item_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 408 matching lines @@
     if (download_->IsComplete()) {
       IconManager* im = g_browser_process->icon_manager();
       gfx::Image* icon = im->LookupIcon(download_->GetUserVerifiedFilePath(),
                                         IconLoader::SMALL);
       if (icon) {
         views::Widget* widget = GetWidget();
         download_util::DragDownload(download_, icon,
                                     widget ? widget->GetNativeView() : NULL);
       }
     }
-  } else if (ExceededDragThreshold(
-                 event.location().x() - drag_start_point_.x(),
-                 event.location().y() - drag_start_point_.y())) {
+  } else if (ExceededDragThreshold(event.location() - drag_start_point_)) {
     dragging_ = true;
   }
   return true;
 }
 
 void DownloadItemView::OnMouseReleased(const ui::MouseEvent& event) {
   HandleClickEvent(event, event.IsOnlyLeftMouseButton());
 }
 
 void DownloadItemView::OnMouseCaptureLost() {
@@ skipping 227 matching lines @@
 
   // Paint the background images.
   int x = kLeftPadding;
   canvas->Save();
   if (base::i18n::IsRTL()) {
     // Since we do not have the mirrored images for
     // (hot_)body_image_set->top_left, (hot_)body_image_set->left,
     // (hot_)body_image_set->bottom_left, and drop_down_image_set,
     // for RTL UI, we flip the canvas to draw those images mirrored.
     // Consequently, we do not need to mirror the x-axis of those images.
-    canvas->Translate(gfx::Point(width(), 0));
+    canvas->Translate(gfx::Vector2d(width(), 0));
     canvas->Scale(-1, 1);
   }
   PaintImages(canvas,
               body_image_set->top_left, body_image_set->left,
               body_image_set->bottom_left,
               x, box_y_, box_height_, body_image_set->top_left->width());
   x += body_image_set->top_left->width();
   PaintImages(canvas,
               body_image_set->top, body_image_set->center,
               body_image_set->bottom,
@@ skipping 536 matching lines @@
 void DownloadItemView::AnimateStateTransition(State from, State to,
                                               ui::SlideAnimation* animation) {
   if (from == NORMAL && to == HOT) {
     animation->Show();
   } else if (from == HOT && to == NORMAL) {
     animation->Hide();
   } else if (from != to) {
     animation->Reset((to == HOT) ? 1.0 : 0.0);
   }
 }