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

ash/launcher/launcher_tooltip_manager_unittest.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 "ash/launcher/launcher_tooltip_manager.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/shelf_layout_manager.h"
@@ skipping 177 matching lines @@
 
   // Shouldn't hide if the mouse is in the tooltip.
   ui::MouseEvent mouse_event(ui::ET_MOUSE_MOVED, tooltip_rect.CenterPoint(),
                              tooltip_rect.CenterPoint(), ui::EF_NONE);
   ui::LocatedEvent::TestApi test_api(&mouse_event);
 
   EXPECT_FALSE(event_filter->PreHandleMouseEvent(root_window, &mouse_event));
   EXPECT_TRUE(TooltipIsVisible());
 
   // Should hide if the mouse is out of the tooltip.
-  test_api.set_location(tooltip_rect.origin().Add(gfx::Point(-1, -1)));
+  test_api.set_location(tooltip_rect.origin().Add(gfx::Vector2d(-1, -1)));
   EXPECT_FALSE(event_filter->PreHandleMouseEvent(root_window, &mouse_event));
   RunAllPendingInMessageLoop();
   EXPECT_FALSE(TooltipIsVisible());
 }
 
 }  // namespace test
 }  // namespace ash