Revert of Update with new default boringssl no-aes cipher suites. Re-enable tests.

webrtc/p2p/base/dtlstransportchannel_unittest.cc

Index: webrtc/p2p/base/dtlstransportchannel_unittest.cc
diff --git a/webrtc/p2p/base/dtlstransportchannel_unittest.cc b/webrtc/p2p/base/dtlstransportchannel_unittest.cc
index c2cae73b8bff7a3292fd9df388d2483a01a24f83..85203a61346647c81f56c04796d9628b30c8d648 100644
--- a/webrtc/p2p/base/dtlstransportchannel_unittest.cc
+++ b/webrtc/p2p/base/dtlstransportchannel_unittest.cc
@@ -641,8 +641,15 @@
   ASSERT_TRUE(Connect());
 }
 
+#if defined(MEMORY_SANITIZER)
+// Fails under MemorySanitizer:
+// See https://code.google.com/p/webrtc/issues/detail?id=5381.
+#define MAYBE_TestDtls12Both DISABLED_TestDtls12Both
+#else
+#define MAYBE_TestDtls12Both TestDtls12Both
+#endif
 // Create two channels with DTLS 1.2 and check ciphers.
-TEST_F(DtlsTransportChannelTest, TestDtls12Both) {
+TEST_F(DtlsTransportChannelTest, MAYBE_TestDtls12Both) {
   MAYBE_SKIP_TEST(HaveDtls);
   SetChannelCount(2);
   PrepareDtls(true, true, rtc::KT_DEFAULT);