Fix code around display overscan settings.

ui/gfx/display.h

Index: ui/gfx/display.h
diff --git a/ui/gfx/display.h b/ui/gfx/display.h
index 5abe1be2cbc8a78c16a33b5da44c9695a323ddc3..a3784ee0c3a6a1e0647533d75797e20bbdf0d47e 100644
--- a/ui/gfx/display.h
+++ b/ui/gfx/display.h
@@ -8,6 +8,7 @@
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/base/ui_export.h"
+#include "ui/gfx/insets.h"
 #include "ui/gfx/rect.h"
 
 namespace gfx {
@@ -74,6 +75,8 @@ class UI_EXPORT Display {
   // |work_area_insets| and the bounds.
   void UpdateWorkAreaFromInsets(const gfx::Insets& work_area_insets);
 
+  void SetOverscanInsets(const gfx::Insets& insets);
+
   // Returns the display's size in pixel coordinates.
   gfx::Size GetSizeInPixel() const;
 
@@ -99,6 +102,7 @@ class UI_EXPORT Display {
 #if defined(USE_AURA)
   Rect bounds_in_pixel_;
 #endif
+  Insets overscan_insets_;
   float device_scale_factor_;
 };