https://bugs.webkit.org/show_bug.cgi?id=119624

Reviewed by Anders Carlsson.

The standard C++11 nullptr and std::nullptr_t type should be used now.

Source/JavaScriptCore:

* heap/PassWeak.h:
* heap/Weak.h:

Source/WebCore:

* bindings/js/JSDOMBinding.h:

Source/WebKit/efl:

* tests/UnitTestUtils/EWKTestView.cpp:

Source/WTF:

* GNUmakefile.list.am:
* WTF.pro:
* WTF.vcxproj/WTF.vcxproj:
* WTF.vcxproj/WTF.vcxproj.filters:
* WTF.xcodeproj/project.pbxproj:
* wtf/CMakeLists.txt:
* wtf/NullPtr.cpp: Removed.
* wtf/NullPtr.h: Removed.
* wtf/OwnArrayPtr.h:
* wtf/OwnPtr.h:
* wtf/PassOwnPtr.h:
* wtf/PassRefPtr.h:
* wtf/RetainPtr.h:
* wtf/win/GDIObject.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@155604 268f45cc-cd09-0410-ab3c-d52691b4dbfc