Separate ash::test::DisplayManagerTestApi from ash

ash/wm/drag_window_resizer_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/wm/drag_window_resizer.h"
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/shelf/shelf_layout_manager.h"
 #include "ash/common/shell_window_ids.h"
@@ skipping 134 matching lines @@
       aura::Window* window,
       const gfx::Point& point_in_parent,
       int window_component) {
     return CreateWindowResizer(WmWindowAura::Get(window), point_in_parent,
                                window_component,
                                aura::client::WINDOW_MOVE_SOURCE_MOUSE)
         .release();
   }
 
   bool TestIfMouseWarpsAt(const gfx::Point& point_in_screen) {
-    return test::DisplayManagerTestApi::TestIfMouseWarpsAt(GetEventGenerator(),
-                                                           point_in_screen);
+    return test::AshTestBase::TestIfMouseWarpsAt(GetEventGenerator(),
+                                                 point_in_screen);
   }
 
   aura::test::TestWindowDelegate delegate_;
   aura::test::TestWindowDelegate delegate2_;
   aura::test::TestWindowDelegate delegate3_;
   aura::test::TestWindowDelegate delegate4_;
   aura::test::TestWindowDelegate delegate5_;
   aura::test::TestWindowDelegate delegate6_;
 
   std::unique_ptr<aura::Window> window_;
@@ skipping 613 matching lines @@
     ASSERT_TRUE(resizer.get());
     resizer->Drag(CalculateDragPoint(*resizer, 399, 200), 0);
     EXPECT_TRUE(TestIfMouseWarpsAt(gfx::Point(399, 200)));
     EXPECT_EQ("401,200",
               aura::Env::GetInstance()->last_mouse_location().ToString());
     resizer->CompleteDrag();
   }
 }
 
 }  // namespace ash