Removed the Derived Sources target.

It has been empty since r159533.

* ANGLE.xcodeproj/project.pbxproj:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@177723 268f45cc-cd09-0410-ab3c-d52691b4dbfc
ANGLE extern symbols are not hidden by default, but should be
https://bugs.webkit.org/show_bug.cgi?id=139936

Reviewed by Mark Rowe.

* Configurations/Base.xcconfig: Changed GCC_SYMBOLS_PRIVATE_EXTERN to YES.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@177724 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Addressed a linker warning about the definition of a method in a category overridng a method from the class.

* UIProcess/API/mac/WKView.mm:
(-[WKView(Private) _targetWindowForMovePreparation]): Deleted. This was identical to the
definition in the main WKView implementation above.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@177725 268f45cc-cd09-0410-ab3c-d52691b4dbfc