Add GetDisplayWithDisplayId to display::Screen.

ui/display/test/test_screen.cc

Index: ui/display/test/test_screen.cc
diff --git a/ui/display/test/test_screen.cc b/ui/display/test/test_screen.cc
index cd96e35b85c7dcd57f2049185d344c58b48b6725..e5af39beab684360cb777a56dfc825c0469fa750 100644
--- a/ui/display/test/test_screen.cc
+++ b/ui/display/test/test_screen.cc
@@ -35,6 +35,15 @@ std::vector<Display> TestScreen::GetAllDisplays() const {
   return std::vector<Display>(1, display_);
 }
 
+bool TestScreen::GetDisplayWithDisplayId(int64_t display_id,
+                                         display::Display* display) const {
+  if (display_.id() == display_id) {
+    *display = display_;
+    return true;
+  }
+  return false;
+}
+
 Display TestScreen::GetDisplayNearestWindow(gfx::NativeView view) const {
   return display_;
 }