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

chrome/browser/ui/views/frame/browser_view.cc

Index: chrome/browser/ui/views/frame/browser_view.cc
diff --git a/chrome/browser/ui/views/frame/browser_view.cc b/chrome/browser/ui/views/frame/browser_view.cc
index 54f2ec6f6ae56bf1ed96e6831f6e92acfc0ef20e..afc1f20f7bcfef136a1a14500ac426caf63f6eb7 100644
--- a/chrome/browser/ui/views/frame/browser_view.cc
+++ b/chrome/browser/ui/views/frame/browser_view.cc
@@ -461,7 +461,8 @@ gfx::Point BrowserView::OffsetPointForToolbarBackgroundImage(
   // The background image starts tiling horizontally at the window left edge and
   // vertically at the top edge of the horizontal tab strip (or where it would
   // be).  We expect our parent's origin to be the window origin.
-  gfx::Point window_point(point.Add(GetMirroredPosition()));
+  gfx::Point window_point(
+      point.Add(GetMirroredPosition().DistanceFromOrigin()));
   window_point.Offset(frame_->GetThemeBackgroundXInset(),
                       -frame_->GetTabStripInsets(false).top);
   return window_point;