Add GetDisplayWithDisplayId to display::Screen.

ui/display/screen_base.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.
 
 // This has to be before any other includes, else default is picked up.
 // See base/logging for details on this.
 #define NOTIMPLEMENTED_POLICY 5
 
 #include "ui/display/screen_base.h"
 
@@ skipping 36 matching lines @@
 
 gfx::NativeWindow ScreenBase::GetWindowAtScreenPoint(const gfx::Point& point) {
   NOTIMPLEMENTED();
   return nullptr;
 }
 
 display::Display ScreenBase::GetPrimaryDisplay() const {
   return *display_list_.GetPrimaryDisplayIterator();
 }
 
+bool ScreenBase::GetDisplayWithDisplayId(int64_t display_id,
+                                         display::Display* display) const {
+  for (display::Display display_in_list : GetAllDisplays()) {

[sadrul, 2016/09/23 19:51:12]

Iterate over display_list_.displays() to avoid extra copy. Also, const&

[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 ScreenBase::GetDisplayNearestWindow(
     gfx::NativeView view) const {
   NOTIMPLEMENTED();
   return *display_list_.GetPrimaryDisplayIterator();
 }
 
 display::Display ScreenBase::GetDisplayNearestPoint(
     const gfx::Point& point) const {
   return *display::FindDisplayNearestPoint(display_list_.displays(), point);
 }
@@ skipping 15 matching lines @@
 
 void ScreenBase::AddObserver(display::DisplayObserver* observer) {
   display_list_.AddObserver(observer);
 }
 
 void ScreenBase::RemoveObserver(display::DisplayObserver* observer) {
   display_list_.RemoveObserver(observer);
 }
 
 }  // namespace display