Import of CCTZ from GitHub.

PiperOrigin-RevId: 609351346
Change-Id: I40f44d42efe65fd8ca1a441e69a0769c87938b20

absl/time/internal/cctz/src/time_zone_lookup.cc

@@ -17,9 +17,6 @@
 
 
 #if defined(__ANDROID__)
 #if defined(__ANDROID__)
 #include <sys/system_properties.h>
 #include <sys/system_properties.h>
-#if defined(__ANDROID_API__) && __ANDROID_API__ >= 21
-#include <dlfcn.h>
-#endif
 #endif
 #endif
 
 
 #if defined(__APPLE__)
 #if defined(__APPLE__)
@@ -66,32 +63,6 @@ namespace time_internal {
 namespace cctz {
 namespace cctz {
 
 
 namespace {
 namespace {
-#if defined(__ANDROID__) && defined(__ANDROID_API__) && __ANDROID_API__ >= 21
-// Android 'L' removes __system_property_get() from the NDK, however
-// it is still a hidden symbol in libc so we use dlsym() to access it.
-// See Chromium's base/sys_info_android.cc for a similar example.
-
-using property_get_func = int (*)(const char*, char*);
-
-property_get_func LoadSystemPropertyGet() {
-  int flag = RTLD_LAZY | RTLD_GLOBAL;
-#if defined(RTLD_NOLOAD)
-  flag |= RTLD_NOLOAD;  // libc.so should already be resident
-#endif
-  if (void* handle = dlopen("libc.so", flag)) {
-    void* sym = dlsym(handle, "__system_property_get");
-    dlclose(handle);
-    return reinterpret_cast<property_get_func>(sym);
-  }
-  return nullptr;
-}
-
-int __system_property_get(const char* name, char* value) {
-  static property_get_func system_property_get = LoadSystemPropertyGet();
-  return system_property_get ? system_property_get(name, value) : -1;
-}
-#endif
-
 #if defined(USE_WIN32_LOCAL_TIME_ZONE)
 #if defined(USE_WIN32_LOCAL_TIME_ZONE)
 // Calls the WinRT Calendar.GetTimeZone method to obtain the IANA ID of the
 // Calls the WinRT Calendar.GetTimeZone method to obtain the IANA ID of the
 // local time zone. Returns an empty vector in case of an error.
 // local time zone. Returns an empty vector in case of an error.