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

ui/views/painter.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/painter.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
 #include "ui/base/resource/resource_bundle.h"
@@ skipping 153 matching lines @@
 };
 
 }  // namespace
 
 // static
 void Painter::PaintPainterAt(gfx::Canvas* canvas,
                              Painter* painter,
                              const gfx::Rect& rect) {
   DCHECK(canvas && painter);
   canvas->Save();
-  canvas->Translate(rect.origin());
+  canvas->Translate(rect.DistanceFromOrigin());
   painter->Paint(canvas, rect.size());
   canvas->Restore();
 }
 
 // static
 Painter* Painter::CreateHorizontalGradient(SkColor c1, SkColor c2) {
   SkColor colors[2];
   colors[0] = c1;
   colors[1] = c2;
   SkScalar pos[] = {0, 1};
@@ skipping 39 matching lines @@
     return;
   }
   canvas->DrawImageInt(*images_[LEFT], 0, 0);
   canvas->DrawImageInt(*images_[RIGHT],
                        size.width() - images_[RIGHT]->width(), 0);
   canvas->TileImageInt(*images_[CENTER], images_[LEFT]->width(), 0,
       size.width() - images_[LEFT]->width() - images_[RIGHT]->width(), height_);
 }
 
 }  // namespace views