Relocate reuseable portions of ash/display/display_util.*

ash/display/extended_mouse_warp_controller.cc

 // Copyright 2015 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/display/extended_mouse_warp_controller.h"
 
 #include <cmath>
 
 #include "ash/display/display_manager.h"
 #include "ash/display/display_util.h"
 #include "ash/display/shared_display_edge_indicator.h"
 #include "ash/display/window_tree_host_manager.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "base/memory/ptr_util.h"
 #include "ui/aura/window.h"
 #include "ui/display/manager/display_layout.h"
+#include "ui/display/manager/display_manager_utilities.h"
 #include "ui/display/screen.h"
 #include "ui/events/event_utils.h"
 #include "ui/wm/core/coordinate_conversion.h"
 
 namespace ash {
 
 namespace {
 
 // Maximum size on the display edge that initiate snapping phantom window,
 // from the corner of the display.
@@ skipping 173 matching lines @@
 std::unique_ptr<ExtendedMouseWarpController::WarpRegion>
 ExtendedMouseWarpController::CreateWarpRegion(const display::Display& a,
                                               const display::Display& b,
                                               int64_t drag_source_id) {
   gfx::Rect a_edge;
   gfx::Rect b_edge;
   int snap_barrier = drag_source_id == display::Display::kInvalidDisplayID
                          ? 0
                          : kMaximumSnapHeight;
 
-  if (!ComputeBoundary(a, b, &a_edge, &b_edge))
+  if (!display::ComputeBoundary(a, b, &a_edge, &b_edge))
     return nullptr;
 
   // Creates the snap window barrirer only when horizontally connected.
   if (a_edge.height() > a_edge.width()) {
     if (drag_source_id == a.id())
       AdjustSourceEdgeBounds(a.bounds(), snap_barrier, &a_edge);
     else if (drag_source_id == b.id())
       AdjustSourceEdgeBounds(b.bounds(), snap_barrier, &b_edge);
   }
 
   return base::MakeUnique<WarpRegion>(a.id(), b.id(), a_edge, b_edge);
 }
 
 }  // namespace ash