Disable TCPChannelClientTest.testConnectIPv6

This test is failing because IPv6 is not fully supported on some of the
bots. (See https://bugs.chromium.org/p/chromium/issues/detail?id=612380)

R=kjellander@webrtc.org
TBR=perkj@webrtc.org
BUG=webrtc:6437
NOTRY=True
TESTED=ninja -C out/gn && out/gn/bin/run_android_junit_tests with and without the CL and verified the test is not run.

Review-Url: https://codereview.webrtc.org/2381503005
Cr-Commit-Position: refs/heads/master@{#14449}

webrtc/examples/androidjunit/src/org/appspot/apprtc/TCPChannelClientTest.java

@@ -15,6 +15,7 @@ import static org.mockito.Mockito.timeout;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.verifyNoMoreInteractions;
 
+import org.chromium.base.test.util.DisabledTest;
 import org.chromium.testing.local.LocalRobolectricTestRunner;
 import org.junit.After;
 import org.junit.Before;
@@ -96,7 +97,10 @@ public class TCPChannelClientTest {
     verify(clientEvents, timeout(CONNECT_TIMEOUT)).onTCPConnected(false);
   }
 
-  @Test
+  // @Test
+  // Disabled because it fails when IPv6 is not supported on the bot.
+  // TODO(ehmaldonado): Enable when bugs.webrtc.org/6437 is fixed.
+  @DisabledTest
   public void testConnectIPv6() {
     setUpIPv6Server();
     try {