diff --git a/webrtc/api/peerconnection_unittest.cc b/webrtc/api/peerconnection_unittest.cc
index 6a909b6b1b..05dddfa085 100644
--- a/webrtc/api/peerconnection_unittest.cc
+++ b/webrtc/api/peerconnection_unittest.cc
@@ -2046,15 +2046,9 @@ TEST_F(P2PTestConductor, GetGcmRecv) {
   TestGcmNegotiation(false, true, kDefaultSrtpCryptoSuite);
 }
 
-// Disabled due to flakiness, see http://crbug.com/webrtc/6776
-#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER)
-#define MAYBE_LocalP2PTestRtpDataChannel DISABLED_LocalP2PTestRtpDataChannel
-#else
-#define MAYBE_LocalP2PTestRtpDataChannel LocalP2PTestRtpDataChannel
-#endif
 // This test sets up a call between two parties with audio, video and an RTP
 // data channel.
-TEST_F(P2PTestConductor, MAYBE_LocalP2PTestRtpDataChannel) {
+TEST_F(P2PTestConductor, LocalP2PTestRtpDataChannel) {
   FakeConstraints setup_constraints;
   setup_constraints.SetAllowRtpDataChannels();
   ASSERT_TRUE(CreateTestClients(&setup_constraints, &setup_constraints));
@@ -2207,15 +2201,9 @@ TEST_F(P2PTestConductor, RegisterDataChannelObserver) {
   EXPECT_EQ_WAIT(data, new_observer.last_message(), kMaxWaitMs);
 }
 
-// Disabled due to flakiness, see http://crbug.com/webrtc/6776
-#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER)
-#define MAYBE_LocalP2PTestReceiverDoesntSupportData DISABLED_LocalP2PTestReceiverDoesntSupportData
-#else
-#define MAYBE_LocalP2PTestReceiverDoesntSupportData LocalP2PTestReceiverDoesntSupportData
-#endif
 // This test sets up a call between two parties with audio, video and but only
 // the initiating client support data.
-TEST_F(P2PTestConductor, MAYBE_LocalP2PTestReceiverDoesntSupportData) {
+TEST_F(P2PTestConductor, LocalP2PTestReceiverDoesntSupportData) {
   FakeConstraints setup_constraints_1;
   setup_constraints_1.SetAllowRtpDataChannels();
   // Must disable DTLS to make negotiation succeed.
@@ -2232,15 +2220,9 @@ TEST_F(P2PTestConductor, MAYBE_LocalP2PTestReceiverDoesntSupportData) {
   EXPECT_FALSE(initializing_client()->data_observer()->IsOpen());
 }
 
-// Disabled due to flakiness, see http://crbug.com/webrtc/6776
-#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER)
-#define MAYBE_AddDataChannelAfterRenegotiation DISABLED_AddDataChannelAfterRenegotiation
-#else
-#define MAYBE_AddDataChannelAfterRenegotiation AddDataChannelAfterRenegotiation
-#endif
 // This test sets up a call between two parties with audio, video. When audio
 // and video is setup and flowing and data channel is negotiated.
-TEST_F(P2PTestConductor, MAYBE_AddDataChannelAfterRenegotiation) {
+TEST_F(P2PTestConductor, AddDataChannelAfterRenegotiation) {
   FakeConstraints setup_constraints;
   setup_constraints.SetAllowRtpDataChannels();
   ASSERT_TRUE(CreateTestClients(&setup_constraints, &setup_constraints));