Use #pragma once in WebCore
https://bugs.webkit.org/show_bug.cgi?id=164686

Patch by Joseph Pecoraro <pecoraro@apple.com> on 2016-11-13
Reviewed by Michael Catanzaro.

* css/*.h:
* plugins/*.h:
* rendering/*.h:
* style/*.h:
* svg/*.h:
* testing/*.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@208668 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/WebCore/svg/SVGFEDisplacementMapElement.h b/Source/WebCore/svg/SVGFEDisplacementMapElement.h
index 9219533..e29cdc6 100644
--- a/Source/WebCore/svg/SVGFEDisplacementMapElement.h
+++ b/Source/WebCore/svg/SVGFEDisplacementMapElement.h
@@ -17,8 +17,7 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#ifndef SVGFEDisplacementMapElement_h
-#define SVGFEDisplacementMapElement_h
+#pragma once
 
 #include "FEDisplacementMap.h"
 #include "SVGAnimatedEnumeration.h"
@@ -88,5 +87,3 @@
 };
 
 } // namespace WebCore
-
-#endif // SVGFEDisplacementMapElement_h