Remove XPathException

Source/core/core.gypi

 {
     'variables': {
         'core_idl_files': [
             'css/CSS.idl',
             'css/CSSCharsetRule.idl',
             'css/CSSFontFaceLoadEvent.idl',
             'css/CSSFontFaceRule.idl',
             'css/CSSHostRule.idl',
             'css/CSSImportRule.idl',
             'css/CSSMediaRule.idl',
@@ skipping 292 matching lines @@
             'workers/SharedWorkerContext.idl',
             'workers/Worker.idl',
             'workers/WorkerContext.idl',
             'workers/WorkerLocation.idl',
             'xml/DOMParser.idl',
             'xml/XMLHttpRequest.idl',
             'xml/XMLHttpRequestProgressEvent.idl',
             'xml/XMLHttpRequestUpload.idl',
             'xml/XMLSerializer.idl',
             'xml/XPathEvaluator.idl',
-            'xml/XPathException.idl',
             'xml/XPathExpression.idl',
             'xml/XPathNSResolver.idl',
             'xml/XPathResult.idl',
             'xml/XSLTProcessor.idl',
         ],
         'svg_idl_files': [
             'svg/SVGAElement.idl',
             'svg/SVGAltGlyphElement.idl',
             'svg/SVGAltGlyphItemElement.idl',
             'svg/SVGAltGlyphDefElement.idl',
@@ skipping 1287 matching lines @@
             'xml/XMLHttpRequestProgressEventThrottle.cpp',
             'xml/XMLHttpRequestProgressEventThrottle.h',
             'xml/XMLHttpRequestUpload.cpp',
             'xml/XMLHttpRequestUpload.h',
             'xml/XMLSerializer.cpp',
             'xml/XMLSerializer.h',
             'xml/XMLTreeViewer.cpp',
             'xml/XMLTreeViewer.h',
             'xml/XPathEvaluator.cpp',
             'xml/XPathEvaluator.h',
-            'xml/XPathException.cpp',
-            'xml/XPathException.h',
             'xml/XPathExpression.cpp',
             'xml/XPathExpression.h',
             'xml/XPathExpressionNode.cpp',
             'xml/XPathExpressionNode.h',
             'xml/XPathFunctions.cpp',
             'xml/XPathFunctions.h',
             'xml/XPathNSResolver.cpp',
             'xml/XPathNSResolver.h',
             'xml/XPathNodeSet.cpp',
             'xml/XPathNodeSet.h',
@@ skipping 2059 matching lines @@
                 'bison_exe': 'bison',
                 # We specify a preprocess so it happens locally and won't get
                 # distributed to goma.
                 # FIXME: /usr/bin/gcc won't exist on OSX forever. We want to
                 # use /usr/bin/clang once we require Xcode 4.x.
                 'preprocessor': '--preprocessor "/usr/bin/gcc -E -P -x c++"'
               }],
          ],
     }
 }