Add GetDisplayWithDisplayId to display::Screen.

ui/display/win/screen_win_unittest.cc

Index: ui/display/win/screen_win_unittest.cc
diff --git a/ui/display/win/screen_win_unittest.cc b/ui/display/win/screen_win_unittest.cc
index bf9552186175b576000a236b621e88339fd0c498..f5d2f76a5182b90729741166223dbc91599c93aa 100644
--- a/ui/display/win/screen_win_unittest.cc
+++ b/ui/display/win/screen_win_unittest.cc
@@ -353,6 +353,16 @@ TEST_F(ScreenWinTestSingleDisplay1x, GetDisplays) {
   EXPECT_EQ(gfx::Rect(0, 0, 1920, 1100), displays[0].work_area());
 }
 
+TEST_F(ScreenWinTestSingleDisplay1x, GetDisplayById) {
+  Screen* screen = GetScreen();
+  int64_t primary_display_id = screen->GetPrimaryDisplay().id();
+  Display display;
+  bool has_display =
+      screen->GetDisplayWithDisplayId(primary_display_id, &display);
+  EXPECT_TRUE(has_display);

[sky, 2016/11/19 15:01:40]

no need for the temporary. This comment holds for all tests where I think you
use this pattern.

+  EXPECT_EQ(screen->GetPrimaryDisplay(), display);
+}
+
 TEST_F(ScreenWinTestSingleDisplay1x, GetNumDisplays) {
   EXPECT_EQ(1, GetScreen()->GetNumDisplays());
 }