Add origin() method on View and use it to simplify some callers.

ui/app_list/views/app_list_main_view_unittest.cc

 // Copyright 2013 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/app_list/views/app_list_main_view.h"
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/run_loop.h"
@@ skipping 129 matching lines @@
   }
 
   // |point| is in |grid_view|'s coordinates.
   AppListItemView* SimulateInitiateDrag(AppsGridView* grid_view,
                                         AppsGridView::Pointer pointer,
                                         const gfx::Point& point) {
     AppListItemView* view = GetItemViewAtPointInGrid(grid_view, point);
     DCHECK(view);
 
     gfx::Point translated =
-        gfx::PointAtOffsetFromOrigin(point - view->bounds().origin());
+        gfx::PointAtOffsetFromOrigin(point - view->origin());
     ui::MouseEvent pressed_event(ui::ET_MOUSE_PRESSED, translated, point,
                                  ui::EventTimeForNow(), 0, 0);
     grid_view->InitiateDrag(view, pointer, pressed_event);
     return view;
   }
 
   // |point| is in |grid_view|'s coordinates.
   void SimulateUpdateDrag(AppsGridView* grid_view,
                           AppsGridView::Pointer pointer,
                           AppListItemView* drag_view,
                           const gfx::Point& point) {
     DCHECK(drag_view);
     gfx::Point translated =
-        gfx::PointAtOffsetFromOrigin(point - drag_view->bounds().origin());
+        gfx::PointAtOffsetFromOrigin(point - drag_view->origin());
     ui::MouseEvent drag_event(ui::ET_MOUSE_DRAGGED, translated, point,
                               ui::EventTimeForNow(), 0, 0);
     grid_view->UpdateDragFromItem(pointer, drag_event);
   }
 
   ContentsView* GetContentsView() { return main_view_->contents_view(); }
 
   AppsGridView* RootGridView() {
     return GetContentsView()->apps_container_view()->apps_grid_view();
   }
@@ skipping 274 matching lines @@
   // The app list model should remain unchanged.
   EXPECT_EQ(1, FolderViewModel()->view_size());
   EXPECT_EQ(2, RootViewModel()->view_size());
   EXPECT_EQ(folder_id, RootGridView()->GetItemViewAt(0)->item()->id());
   EXPECT_NE(nullptr,
             delegate_->GetTestModel()->FindFolderItem("single_item_folder"));
 }
 
 }  // namespace test
 }  // namespace app_list