Refactor screen/monitor so that gfx::Screen returns monitor object.

chrome/browser/ui/gtk/browser_window_gtk.cc

Index: chrome/browser/ui/gtk/browser_window_gtk.cc
diff --git a/chrome/browser/ui/gtk/browser_window_gtk.cc b/chrome/browser/ui/gtk/browser_window_gtk.cc
index eb23212378fc46d365c6f82833f6b5ad8ffcaaca..59c587a5d5b5f8a049c52cce533ccdc0bc1422bf 100644
--- a/chrome/browser/ui/gtk/browser_window_gtk.cc
+++ b/chrome/browser/ui/gtk/browser_window_gtk.cc
@@ -104,6 +104,7 @@
 #include "ui/gfx/image/cairo_cached_surface.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/rect.h"
+#include "ui/gfx/monitor.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/skia_utils_gtk.h"
 
@@ -2103,7 +2104,7 @@ void BrowserWindowGtk::SaveWindowPosition() {
   window_preferences->SetBoolean("maximized", IsMaximized());
 
   gfx::Rect work_area(
-      gfx::Screen::GetMonitorWorkAreaMatching(restored_bounds_));
+      gfx::Screen::GetMonitorMatching(restored_bounds_)->GetWorkArea());
   window_preferences->SetInteger("work_area_left", work_area.x());
   window_preferences->SetInteger("work_area_top", work_area.y());
   window_preferences->SetInteger("work_area_right", work_area.right());