Increasing STUN timeout for some more tests.

webrtc/p2p/base/stunrequest_unittest.cc

Index: webrtc/p2p/base/stunrequest_unittest.cc
diff --git a/webrtc/p2p/base/stunrequest_unittest.cc b/webrtc/p2p/base/stunrequest_unittest.cc
index 5845a0ecbbbca52ea6d1336a6758b081305a76ed..5fb34a85d263e1ec90e74dd59711e3cb9d97557a 100644
--- a/webrtc/p2p/base/stunrequest_unittest.cc
+++ b/webrtc/p2p/base/stunrequest_unittest.cc
@@ -17,6 +17,12 @@
 
 using namespace cricket;
 
+// STUN timeout (with all retries) is 9500ms.
+// Add some margin of error for slow bots.
+// TODO(deadbeef): Use simulated clock instead of just increasing timeouts to
+// fix flaky tests.
+static const int kTimeoutMs = 15000;
+
 class StunRequestTest : public testing::Test,
                         public sigslot::has_slots<> {
  public:
@@ -172,7 +178,7 @@ TEST_F(StunRequestTest, TestTimeout) {
   StunMessage* res = CreateStunMessage(STUN_BINDING_RESPONSE, req);
 
   manager_.Send(new StunRequestThunker(req, this));
-  rtc::Thread::Current()->ProcessMessages(10000);  // > STUN timeout
+  rtc::Thread::Current()->ProcessMessages(kTimeoutMs);
   EXPECT_FALSE(manager_.CheckResponse(res));
 
   EXPECT_TRUE(response_ == NULL);