Overscan calibration UI.

ash/display/multi_display_manager.h

Index: ash/display/multi_display_manager.h
diff --git a/ash/display/multi_display_manager.h b/ash/display/multi_display_manager.h
index 0d2a4cf8134e888288ebe7230b7283e417c443aa..b8a7641948b83991d94079ced553415e5ae1c33f 100644
--- a/ash/display/multi_display_manager.h
+++ b/ash/display/multi_display_manager.h
@@ -78,6 +78,10 @@ class ASH_EXPORT MultiDisplayManager : public aura::DisplayManager,
   // display's bounds change.
   void SetOverscanInsets(int64 display_id, const gfx::Insets& insets_in_dip);
 
+  // Returns the current overscan insets for the specified |display_id|.
+  // Returns an empty insets (0, 0, 0, 0) if the display is not registered.

[oshima, 2012/10/19 19:36:11]

if no insets are specified for the display.

[Jun Mukai, 2012/10/19 21:39:34]

Done.

+  gfx::Insets GetOverscanInsets(int64 display_id);
+
   // DisplayManager overrides:
   virtual void OnNativeDisplaysChanged(
       const std::vector<gfx::Display>& displays) OVERRIDE;