Consolidate bubble border code.

ash/wm/app_list_controller.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/wm/app_list_controller.h"
 
 #include "ash/launcher/launcher.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
@@ skipping 31 matching lines @@
 ui::Layer* GetLayer(views::Widget* widget) {
   return widget->GetNativeView()->layer();
 }
 
 // Gets arrow location based on shelf alignment.
 views::BubbleBorder::ArrowLocation GetBubbleArrowLocation() {
   DCHECK(Shell::HasInstance());
   ShelfAlignment shelf_alignment = Shell::GetInstance()->GetShelfAlignment();
   switch (shelf_alignment) {
     case ash::SHELF_ALIGNMENT_BOTTOM:
-      return views::BubbleBorder::BOTTOM_RIGHT;
+      return views::BubbleBorder::BOTTOM_CENTER;
     case ash::SHELF_ALIGNMENT_LEFT:
-      return views::BubbleBorder::LEFT_BOTTOM;
+      return views::BubbleBorder::LEFT_CENTER;
     case ash::SHELF_ALIGNMENT_RIGHT:
-      return views::BubbleBorder::RIGHT_BOTTOM;
+      return views::BubbleBorder::RIGHT_CENTER;
     default:
       NOTREACHED() << "Unknown shelf alignment " << shelf_alignment;
-      return views::BubbleBorder::BOTTOM_RIGHT;
+      return views::BubbleBorder::BOTTOM_CENTER;
   }
 }
 
 // Offset given |rect| towards shelf.
 gfx::Rect OffsetTowardsShelf(const gfx::Rect& rect) {
   DCHECK(Shell::HasInstance());
   ShelfAlignment shelf_alignment = Shell::GetInstance()->GetShelfAlignment();
   gfx::Rect offseted(rect);
   switch (shelf_alignment) {
     case SHELF_ALIGNMENT_BOTTOM:
@@ skipping 284 matching lines @@
     ui::Layer* layer = GetLayer(view_->GetWidget());
     ui::ScopedLayerAnimationSettings animation(layer->GetAnimator());
     animation.SetTransitionDuration(
         base::TimeDelta::FromMilliseconds(kSnapBackAnimationDurationMs));
     layer->SetBounds(view_bounds_);
   }
 }
 
 }  // namespace internal
 }  // namespace ash