Add FileError for File API.
https://bugs.webkit.org/show_bug.cgi?id=37840

Reviewed by Dmitry Titov.

The test will be added when implementing FileReader and FilerWriter.

* Android.derived.jscbindings.mk:
* Android.derived.v8bindings.mk:
* DerivedSources.cpp:
* DerivedSources.make:
* GNUmakefile.am:
* WebCore.gypi:
* WebCore.pri:
* WebCore.pro:
* WebCore.vcproj/WebCore.vcproj:
* WebCore.xcodeproj/project.pbxproj:
* dom/ExceptionCode.h:
(WebCore::):
* html/FileError.h: Added.
* html/FileError.idl: Added.
* page/DOMWindow.idl:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@58194 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/WebCore/DerivedSources.cpp b/WebCore/DerivedSources.cpp
index 6626ec6..b72dd14 100644
--- a/WebCore/DerivedSources.cpp
+++ b/WebCore/DerivedSources.cpp
@@ -85,6 +85,7 @@
 #include "JSEventException.cpp"
 #include "JSEventSource.cpp"
 #include "JSFile.cpp"
+#include "JSFileError.cpp"
 #include "JSFileList.cpp"
 #include "JSGeolocation.cpp"
 #include "JSGeoposition.cpp"