Reviewed by Eric Seidel.

        Renamed all V8 NPN_ functions to _NPN_ to match JSC and make them "private".
        https://bugs.webkit.org/show_bug.cgi?id=28089

        Rename all the NPN_foo functions to _NPN_foo so that they can't directly be
        called by mistake.  This roughly matches the way JSC does it, which is an
        additional advantage.

        * bindings/v8/NPV8Object.cpp:
        (npCreateV8ScriptObject):
        (_NPN_Invoke):
        (_NPN_InvokeDefault):
        (_NPN_Evaluate):
        (_NPN_EvaluateHelper):
        (_NPN_GetProperty):
        (_NPN_SetProperty):
        (_NPN_RemoveProperty):
        (_NPN_HasProperty):
        (_NPN_HasMethod):
        (_NPN_SetException):
        (_NPN_Enumerate):
        (_NPN_Construct):
        * bindings/v8/ScriptController.cpp:
        (WebCore::ScriptController::clearScriptObjects):
        (WebCore::ScriptController::createScriptInstanceForWidget):
        (WebCore::ScriptController::cleanupScriptObjectsForPlugin):
        * bindings/v8/V8NPObject.cpp:
        (npObjectInvokeImpl):
        (npObjectGetProperty):
        (npObjectIndexedPropertyGetter):
        (npObjectGetIndexedProperty):
        (npObjectSetProperty):
        (npObjectIndexedPropertySetter):
        (npObjectSetIndexedProperty):
        (weakNPObjectCallback):
        (createV8ObjectForNPObject):
        (forgetV8ObjectForNPObject):
        * bindings/v8/V8NPUtils.cpp:
        (getStringIdentifier):
        * bindings/v8/npruntime.cpp:
        * bindings/v8/npruntime_impl.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@47021 268f45cc-cd09-0410-ab3c-d52691b4dbfc