Checks the possibility of overscans from EDID extension data.

ui/base/x/x11_util.h

Index: ui/base/x/x11_util.h
diff --git a/ui/base/x/x11_util.h b/ui/base/x/x11_util.h
index e7169a6f0d1515dd2fdf21f95194dabb87292cb3..18cffb3fafa824c708b260415c4a7e4bb17a1415 100644
--- a/ui/base/x/x11_util.h
+++ b/ui/base/x/x11_util.h
@@ -276,6 +276,10 @@ UI_EXPORT bool GetOutputDeviceData(XID output,
                                    uint32* serial_number,
                                    std::string* human_readable_name);
 
+// Returns true if the EDID for the output has the flag of overscan. Note that
+// returning false does not mean no overscan, it just means the lack of flag.
+UI_EXPORT bool GetOutputOverscanFlag(XID output);

[Daniel Erat, 2013/01/03 19:04:19]

nit: s/Get/Has/

[Jun Mukai, 2013/01/03 21:37:37]

Done.

+
 // Gets the names of the all displays physically connected to the system.
 UI_EXPORT std::vector<std::string> GetDisplayNames(
     const std::vector<XID>& output_id);