Remove unused ash::SHELF_ALIGNMENT_TOP

ash/system/web_notification/ash_popup_alignment_delegate_unittest.cc

 // Copyright 2014 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/system/web_notification/ash_popup_alignment_delegate.h"
 
 #include <utility>
 #include <vector>
 
 #include "ash/display/display_manager.h"
@@ skipping 117 matching lines @@
   EXPECT_FALSE(alignment_delegate()->IsFromLeft());
 
   Shell::GetInstance()->SetShelfAlignment(
       SHELF_ALIGNMENT_LEFT,
       Shell::GetPrimaryRootWindow());
   toast_point.set_x(alignment_delegate()->GetToastOriginX(toast_size));
   toast_point.set_y(alignment_delegate()->GetBaseLine());
   EXPECT_EQ(BOTTOM_LEFT, GetPositionInDisplay(toast_point));
   EXPECT_FALSE(alignment_delegate()->IsTopDown());
   EXPECT_TRUE(alignment_delegate()->IsFromLeft());
-
-  Shell::GetInstance()->SetShelfAlignment(
-      SHELF_ALIGNMENT_TOP,
-      Shell::GetPrimaryRootWindow());
-  toast_point.set_x(alignment_delegate()->GetToastOriginX(toast_size));
-  toast_point.set_y(alignment_delegate()->GetBaseLine());
-  EXPECT_EQ(TOP_RIGHT, GetPositionInDisplay(toast_point));
-  EXPECT_TRUE(alignment_delegate()->IsTopDown());
-  EXPECT_FALSE(alignment_delegate()->IsFromLeft());
 }
 
 TEST_F(AshPopupAlignmentDelegateTest, LockScreen) {
   if (!SupportsHostWindowResize())
     return;
 
   const gfx::Rect toast_size(0, 0, 10, 10);
 
   Shell::GetInstance()->SetShelfAlignment(
       SHELF_ALIGNMENT_LEFT,
@@ skipping 178 matching lines @@
   SetKeyboardBounds(keyboard_bounds);
   int keyboard_baseline = alignment_delegate()->GetBaseLine();
   EXPECT_NE(baseline, keyboard_baseline);
   EXPECT_GT(keyboard_bounds.y(), keyboard_baseline);
 
   SetKeyboardBounds(gfx::Rect());
   EXPECT_EQ(baseline, alignment_delegate()->GetBaseLine());
 }
 
 }  // namespace ash