[libIDE] When printing type interface, ensure we translate 'Self' to the type under printing. rdar://27306890 (#3514)

Author: nkcsgexi

lib/AST/ASTPrinter.cpp

@@ -157,7 +157,7 @@ class ArchetypeSelfTransformer : public PrinterArchetypeTransformer {
     for (; Self->getParent(); Self = Self->getParent()) {
       Names.insert(Names.begin(), Self->getName());
     }
-    if (!Self->getSelfProtocol() || Names.empty())
+    if (!Self->getSelfProtocol())
       return tryNamedArchetypeTransform(Ty);
     Type Result = checkMemberType(DC, BaseTy, Names);
     if (Result)

test/IDE/print_type_interface.swift

@@ -74,6 +74,7 @@ extension D {
 // TYPE4-DAG: public mutating func insert<Int>(contentsOf newElements: C, at i: Int)
 // TYPE4-DAG: public mutating func removeFirst(_ n: Int)
 // TYPE4-DAG: public mutating func replaceSubrange<Int>(_ subrange: CountableRange<Int>, with newElements: C)
+// TYPE4-DAG: public func makeIterator() -> IndexingIterator<Array<Int>>
 // TYPE4-NOT: public func joined
 
 // RUN: %target-swift-ide-test -print-type-interface -usr=_TtGSaSS_ -module-name print_type_interface -source-filename %s | FileCheck %s -check-prefix=TYPE5