Roll external/abseil_cpp/ 3cb498899..58df17f78 (2 commits)

abseil/abseil-cpp@3cb4988...58df17f

Created with:
  roll-dep external/abseil_cpp

DEPS

@@ -3,7 +3,7 @@ use_relative_paths = True
 vars = {
   'github': 'https://github.com',
 
-  'abseil_revision': '3cb4988999d2f16e11d86f9921e9526486ef1960',
+  'abseil_revision': '58df17f78e06474c60566f6da9b1157345b84b52',
 
   'effcee_revision': '2c97e5689ed8d7ab6ae5820f884f03a601ae124b',