Add a function for parsing RFC 5280's "TBSCertificate".

net/net.gypi

Index: net/net.gypi
diff --git a/net/net.gypi b/net/net.gypi
index f9d47768a4acf99cce4ad7c87a718053b893712d..1d265f7bf50ce91a85f58192e8719cc8bad66f43 100644
--- a/net/net.gypi
+++ b/net/net.gypi
@@ -79,6 +79,8 @@
       'cert/ct_verify_result.h',
       'cert/internal/extended_key_usage.cc',
       'cert/internal/extended_key_usage.h',
+      'cert/internal/parse_certificate.cc',
+      'cert/internal/parse_certificate.h',
       'cert/internal/signature_algorithm.cc',
       'cert/internal/signature_algorithm.h',
       'cert/internal/signature_policy.cc',
@@ -1374,6 +1376,7 @@
       'cert/ct_serialization_unittest.cc',
       'cert/ev_root_ca_metadata_unittest.cc',
       'cert/internal/extended_key_usage_unittest.cc',
+      'cert/internal/parse_certificate_unittest.cc',
       'cert/internal/signature_algorithm_unittest.cc',
       'cert/internal/verify_name_match_unittest.cc',
       'cert/internal/verify_signed_data_unittest.cc',