[interop][SwiftToCxx] NFC, adopt SWIFT_INLINE_THUNK in the stdlib overlay

Author: hyp

lib/PrintAsClang/_SwiftStdlibCxxOverlay.h

@@ -47,24 +47,24 @@ template <class Collection, class T> class CollectionIterator {
   using Index =
       decltype(reinterpret_cast<Collection *>(0x123)->getStartIndex());
 
-  inline CollectionIterator(const Collection &collection)
+  SWIFT_INLINE_THUNK CollectionIterator(const Collection &collection)
       : collection(collection) {
     index = collection.getStartIndex();
     endIndex = collection.getEndIndex();
     // FIXME: Begin read access.
   }
 
-  inline ~CollectionIterator() {
+  SWIFT_INLINE_THUNK ~CollectionIterator() {
     // FIXME: End read access.
   }
 
-  inline T operator*() const { return collection[index]; }
-  inline void operator++() {
+  SWIFT_INLINE_THUNK T operator*() const { return collection[index]; }
+  SWIFT_INLINE_THUNK void operator++() {
     ++index;
     // FIXME: assert(index <= endIndex); // No need to go past the end.
   }
 
-  inline bool operator!=(const IterationEndSentinel &) const {
+  SWIFT_INLINE_THUNK bool operator!=(const IterationEndSentinel &) const {
     return index != endIndex;
   }
 
@@ -81,13 +81,13 @@ template <class T> using ArrayIterator = CollectionIterator<Array<T>, T>;
 
 // FIXME: This should apply to more than the Array type.
 template <class T>
-inline cxxOverlay::ArrayIterator<T> begin(const Array<T> &array
+SWIFT_INLINE_THUNK cxxOverlay::ArrayIterator<T> begin(const Array<T> &array
                                           [[clang::lifetimebound]]) {
   return cxxOverlay::ArrayIterator<T>(array);
 }
 
 template <class T>
-inline cxxOverlay::IterationEndSentinel end(const Array<T> &) {
+SWIFT_INLINE_THUNK cxxOverlay::IterationEndSentinel end(const Array<T> &) {
   return {};
 }