Add GetDisplayWithDisplayId to display::Screen.

ui/display/win/screen_win.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 "ui/display/win/screen_win.h"
 
 #include <windows.h>
 #include <shellscalingapi.h>
 
 #include <algorithm>
@@ skipping 370 matching lines @@
 }
 
 int ScreenWin::GetNumDisplays() const {
   return static_cast<int>(screen_win_displays_.size());
 }
 
 std::vector<display::Display> ScreenWin::GetAllDisplays() const {
   return ScreenWinDisplaysToDisplays(screen_win_displays_);
 }
 
+bool ScreenWin::GetDisplayWithDisplayId(int64_t display_id,
+                                        display::Display* display) const {
+  for (const display::Display& display_in_list :
+       ScreenWinDisplaysToDisplays(screen_win_displays_)) {

[sadrul, 2016/09/30 03:17:14]

This too is creating a new list that we don't need. This should look like:

  for (const auto& disp : screen_win_displays_) {
    if (disp.display().id() == display_id) {
      *display = disp.display();
      return true;
    }
  }
  return false;

[riajiang, 2016/10/05 14:54:11]

Done.

+    if (display_in_list.id() == display_id) {
+      *display = display_in_list;
+      return true;
+    }
+  }
+  return false;
+}
+
 display::Display ScreenWin::GetDisplayNearestWindow(
     gfx::NativeView window) const {
   HWND window_hwnd = GetHWNDFromNativeView(window);
   if (!window_hwnd) {
     // When |window| isn't rooted to a display, we should just return the
     // default display so we get some correct display information like the
     // scaling factor.
     return GetPrimaryDisplay();
   }
   ScreenWinDisplay screen_win_display =
@@ skipping 187 matching lines @@
     if (std::find(unique_scale_factors.begin(), unique_scale_factors.end(),
                   reported_scale) == unique_scale_factors.end()) {
       unique_scale_factors.push_back(reported_scale);
       UMA_HISTOGRAM_SPARSE_SLOWLY("UI.DeviceScale", reported_scale);
     }
   }
 }
 
 }  // namespace win
 }  // namespace display