Disable UDPSocketTest.ConnectRandomBind on Fuchsia

The test timeouts when running on bots with nested virtualization due
to slow IPIs and CPU contention.

Bug: 826952
Change-Id: I2f8583922bf0591357dd1a0259c879df99b845c2
Reviewed-on: https://chromium-review.googlesource.com/990731Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547564}

net/socket/udp_socket_unittest.cc

@@ -349,7 +349,14 @@ TEST_F(UDPSocketTest, MAYBE_LocalBroadcast) {
 // random, but they are enough to protect from most common non-random port
 // allocation strategies (e.g. counter, pool of available ports, etc.) False
 // positive result is theoretically possible, but its probability is negligible.
-TEST_F(UDPSocketTest, ConnectRandomBind) {
+//
+// Sometimes times outs on Fuchsia on bots. https://crbug.com/826952
+#if defined(OS_FUCHSIA)
+#define MAYBE_ConnectRandomBind DISABLED_ConnectRandomBind
+#else
+#define MAYBE_ConnectRandomBind ConnectRandomBind
+#endif
+TEST_F(UDPSocketTest, MAYBE_ConnectRandomBind) {
   const int kIterations = 1000;
 
   std::vector<int> used_ports;