Reviewed by Geoffrey Garen.

        Make ClassInfo required when creating a Structure
        https://bugs.webkit.org/show_bug.cgi?id=59340

        Add ClassInfo to all those types which currently don't
        have it, and add an assertion to Structure::create to
        ensure that the provided classInfo is not null.

        * runtime/Executable.h:
        (JSC::EvalExecutable::createStructure):
        (JSC::ProgramExecutable::createStructure):
        (JSC::FunctionExecutable::createStructure):
        * runtime/GetterSetter.cpp:
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::createStructure):
        * runtime/JSAPIValueWrapper.cpp:
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        * runtime/JSCell.cpp:
        * runtime/JSCell.h:
        * runtime/JSString.cpp:
        * runtime/JSString.h:
        (JSC::RopeBuilder::createStructure):
        * runtime/Structure.h:
        (JSC::Structure::create):
        (JSC::JSCell::createDummyStructure):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@84800 268f45cc-cd09-0410-ab3c-d52691b4dbfc