Extract MonitorInfoProvider from WindowSizer.

ui/gfx/screen_aura.cc

Index: ui/gfx/screen_aura.cc
diff --git a/ui/gfx/screen_aura.cc b/ui/gfx/screen_aura.cc
index 0093af6aceb26a423ad06302f4f8a557abae0741..ea4216fb557846ae6f90271e7155946d80027f78 100644
--- a/ui/gfx/screen_aura.cc
+++ b/ui/gfx/screen_aura.cc
@@ -48,6 +48,21 @@ gfx::Rect Screen::GetMonitorAreaNearestPoint(const gfx::Point& point) {
 }
 
 // static
+gfx::Rect Screen::GetPrimaryMonitorWorkArea() {
+  return instance_->GetMonitorWorkAreaNearestPoint(gfx::Point());
+}
+
+// static
+gfx::Rect Screen::GetPrimaryMonitorBounds() {
+  return instance_->GetMonitorAreaNearestPoint(gfx::Point());
+}
+
+// static
+gfx::Rect Screen::GetMonitorWorkAreaMatching(const gfx::Rect& match_rect) {
+  return instance_->GetMonitorWorkAreaNearestPoint(gfx::Point());
+}
+
+// static
 gfx::NativeWindow Screen::GetWindowAtCursorScreenPoint() {
   return instance_->GetWindowAtCursorScreenPointImpl();
 }