Move display_finder to ui/display

ui/gfx/display_finder.cc

-// Copyright 2016 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/gfx/display_finder.h"
-
-#include <limits>
-
-#include "base/logging.h"
-#include "ui/gfx/display.h"
-#include "ui/gfx/geometry/point.h"
-#include "ui/gfx/geometry/rect.h"
-
-namespace gfx {
-
-const Display* FindDisplayNearestPoint(const std::vector<Display>& displays,
-                                       const Point& point) {
-  DCHECK(!displays.empty());
-  int min_distance = std::numeric_limits<int>::max();
-  const Display* nearest_display = nullptr;
-  for (const auto& display : displays) {
-    const int distance = display.bounds().ManhattanDistanceToPoint(point);
-    if (distance < min_distance) {
-      min_distance = distance;
-      nearest_display = &display;
-    }
-  }
-  // There should always be at least one display that is less than INT_MAX away.
-  DCHECK(nearest_display);
-  return nearest_display;
-}
-
-const Display* FindDisplayWithBiggestIntersection(
-    const std::vector<Display>& displays,
-    const Rect& rect) {
-  DCHECK(!displays.empty());
-  int max_area = 0;
-  const Display* matching = nullptr;
-  for (const auto& display : displays) {
-    const Rect intersect = IntersectRects(display.bounds(), rect);
-    const int area = intersect.width() * intersect.height();
-    if (area > max_area) {
-      max_area = area;
-      matching = &display;
-    }
-  }
-  return matching;
-}
-
-}  // namespace gfx