Changes:

 - Add android to xfail.
 - Test char8_t unconditionally.

Author: vhscampos

libcxx/test/std/depr/depr.c.headers/uchar_h_char8_t.compile.pass.cpp

@@ -10,6 +10,7 @@
 
 // The following platforms do not provide mbrtoc8 and c8rtomb so the tests fail
 // XFAIL: target={{.+}}-aix{{.*}}
+// XFAIL: android
 // XFAIL: darwin
 // XFAIL: freebsd
 // XFAIL: windows
@@ -19,9 +20,5 @@
 
 #include <uchar.h>
 
-#include "test_macros.h"
-
-#if !defined(TEST_HAS_NO_C8RTOMB_MBRTOC8)
 ASSERT_SAME_TYPE(size_t, decltype(mbrtoc8((char8_t*)0, (const char*)0, (size_t)0, (mbstate_t*)0)));
 ASSERT_SAME_TYPE(size_t, decltype(c8rtomb((char*)0, (char8_t)0, (mbstate_t*)0)));
-#endif

libcxx/test/std/strings/c.strings/cuchar_char8_t.compile.pass.cpp

@@ -10,6 +10,7 @@
 
 // The following platforms do not provide mbrtoc8 and c8rtomb so the tests fail
 // XFAIL: target={{.+}}-aix{{.*}}
+// XFAIL: android
 // XFAIL: darwin
 // XFAIL: freebsd
 // XFAIL: windows
@@ -19,9 +20,5 @@
 
 #include <cuchar>
 
-#include "test_macros.h"
-
-#if !defined(TEST_HAS_NO_C8RTOMB_MBRTOC8)
 ASSERT_SAME_TYPE(std::size_t, decltype(std::mbrtoc8((char8_t*)0, (const char*)0, (size_t)0, (mbstate_t*)0)));
 ASSERT_SAME_TYPE(std::size_t, decltype(std::c8rtomb((char*)0, (char8_t)0, (mbstate_t*)0)));
-#endif