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

chrome/browser/chromeos/ui/setting_level_bubble.cc

Index: chrome/browser/chromeos/ui/setting_level_bubble.cc
diff --git a/chrome/browser/chromeos/ui/setting_level_bubble.cc b/chrome/browser/chromeos/ui/setting_level_bubble.cc
index 8635bcc804f2bdd0e06726d4ab36b82ba577577b..a673f47b754e06a6e63ce82746616239b0551ff4 100644
--- a/chrome/browser/chromeos/ui/setting_level_bubble.cc
+++ b/chrome/browser/chromeos/ui/setting_level_bubble.cc
@@ -82,7 +82,7 @@ gfx::Rect SettingLevelBubbleDelegateView::GetAnchorRect() {
   // Calculate the position in screen coordinates that the bubble should
   // "point" at (since we use BubbleBorder::FLOAT, this position actually
   // specifies the center of the bubble).
-  gfx::Rect monitor_area = gfx::Screen::GetMonitorAreaNearestWindow(NULL);
+  gfx::Rect monitor_area = gfx::Screen::GetPrimaryMonitor().bounds();
   return (gfx::Rect(
       monitor_area.x() + kBubbleXRatio * monitor_area.width(),
       monitor_area.bottom() - view_size.height() / 2 - kBubbleBottomGap, 0, 0));