Revert of Disable flaky TransportSecurityStateTest.BuiltinCertPins on Android.

net/http/transport_security_state_unittest.cc

Index: net/http/transport_security_state_unittest.cc
diff --git a/net/http/transport_security_state_unittest.cc b/net/http/transport_security_state_unittest.cc
index db5be28e71f495aa38fe669f7094c35251e51ec5..fcd2a16aac14e2d59c061c77d050da1e83fda2b2 100644
--- a/net/http/transport_security_state_unittest.cc
+++ b/net/http/transport_security_state_unittest.cc
@@ -1235,12 +1235,7 @@
   EXPECT_FALSE(state.GetDynamicPKPState(kLongName, &pkp_state));
 }
 
-#if defined(OS_ANDROID)
-#define MAYBE_BuiltinCertPins DISABLED_BuiltinCertPins
-#else
-#define MAYBE_BuiltinCertPins BuiltinCertPins
-#endif
-TEST_F(TransportSecurityStateTest, MAYBE_BuiltinCertPins) {
+TEST_F(TransportSecurityStateTest, BuiltinCertPins) {
   TransportSecurityState state;
   EnableStaticPins(&state);
   TransportSecurityState::STSState sts_state;