Temporarily revert dangling std::string_view detection until dependent is fixed

PiperOrigin-RevId: 621413395
Change-Id: I20e9fac94e81e59c0d723f115670c8cf68e9b44a

absl/meta/type_traits.h

@@ -630,11 +630,6 @@ template <typename T>
 struct IsView : std::integral_constant<bool, std::is_pointer<T>::value ||
 struct IsView : std::integral_constant<bool, std::is_pointer<T>::value ||
                                                  IsViewImpl<T>::value> {};
                                                  IsViewImpl<T>::value> {};
 
 
-#ifdef ABSL_HAVE_STD_STRING_VIEW
-template <typename Char, typename Traits>
-struct IsView<std::basic_string_view<Char, Traits>> : std::true_type {};
-#endif
-
 #ifdef __cpp_lib_span
 #ifdef __cpp_lib_span
 template <typename T>
 template <typename T>
 struct IsView<std::span<T>> : std::true_type {};
 struct IsView<std::span<T>> : std::true_type {};

absl/meta/type_traits_test.cc

@@ -45,12 +45,6 @@ static_assert(IsOwnerAndNotView<std::string>::value,
               "string is an owner, not a view");
               "string is an owner, not a view");
 static_assert(IsOwnerAndNotView<std::wstring>::value,
 static_assert(IsOwnerAndNotView<std::wstring>::value,
               "wstring is an owner, not a view");
               "wstring is an owner, not a view");
-#ifdef ABSL_HAVE_STD_STRING_VIEW
-static_assert(!IsOwnerAndNotView<std::string_view>::value,
-              "string_view is a view, not an owner");
-static_assert(!IsOwnerAndNotView<std::wstring_view>::value,
-              "wstring_view is a view, not an owner");
-#endif
 
 
 template <class T, class U>
 template <class T, class U>
 struct simple_pair {
 struct simple_pair {

absl/strings/string_view.h

@@ -173,7 +173,6 @@ class string_view {
   using reverse_iterator = const_reverse_iterator;
   using reverse_iterator = const_reverse_iterator;
   using size_type = size_t;
   using size_type = size_t;
   using difference_type = std::ptrdiff_t;
   using difference_type = std::ptrdiff_t;
-  using absl_internal_is_view = std::true_type;
 
 
   static constexpr size_type npos = static_cast<size_type>(-1);
   static constexpr size_type npos = static_cast<size_type>(-1);
 
 

absl/strings/string_view_test.cc

@@ -47,14 +47,6 @@
 
 
 namespace {
 namespace {
 
 
-static_assert(!absl::type_traits_internal::IsOwner<absl::string_view>::value &&
-                  absl::type_traits_internal::IsView<absl::string_view>::value,
-              "string_view is a view, not an owner");
-
-static_assert(absl::type_traits_internal::IsLifetimeBoundAssignment<
-                  absl::string_view, std::string>::value,
-              "lifetimebound assignment not detected");
-
 // A minimal allocator that uses malloc().
 // A minimal allocator that uses malloc().
 template <typename T>
 template <typename T>
 struct Mallocator {
 struct Mallocator {