Deprecate FileError in FileAPI

Source/core/page/UseCounter.cpp

Index: Source/core/page/UseCounter.cpp
diff --git a/Source/core/page/UseCounter.cpp b/Source/core/page/UseCounter.cpp
index 8d10626ffdb07eb3fb96f822844f4b2c4f3ccab0..7256ae1dc47d9cce067b94301448ce89e1b2eb26 100644
--- a/Source/core/page/UseCounter.cpp
+++ b/Source/core/page/UseCounter.cpp
@@ -661,6 +661,9 @@ String UseCounter::deprecationMessage(Feature feature)
     case ConsoleMarkTimeline:
         return "console.markTimeline is deprecated. Please use the console.timeStamp instead.";
 
+    case FileError:
+        return "FileError is deprecated. Refer 'name' or 'message' attribute of DOMError instead of 'code'.";

[Mike West, 2013/08/21 12:44:00]

Nit: "Please use the 'name' or 'message' attributes of DOMError rather than
'code'."

[kinuko, 2013/08/21 16:27:45]

Done.

+
     // Features that aren't deprecated don't have a deprecation message.
     default:
         return String();