Fix leak of sequenced worker pool in unit tests when service_ is replaced.

net/ssl/server_bound_cert_service_unittest.cc

Index: net/ssl/server_bound_cert_service_unittest.cc
diff --git a/net/ssl/server_bound_cert_service_unittest.cc b/net/ssl/server_bound_cert_service_unittest.cc
index 0063f496036854c4c3a1ae2be4cbc1dea394ae66..0476379a90afbb4970f56dfc390f7635fa89d8ce 100644
--- a/net/ssl/server_bound_cert_service_unittest.cc
+++ b/net/ssl/server_bound_cert_service_unittest.cc
@@ -529,6 +529,12 @@ TEST_F(ServerBoundCertServiceTest, AsyncStoreGetNoCertsInStore) {
 
   mock_store->CallGetServerBoundCertCallbackWithResult(
       ERR_FILE_NOT_FOUND, base::Time(), std::string(), std::string());
+  // Wait for generation to finish.
+  sequenced_worker_pool_->FlushForTesting();
+  // Wait for reply from the ServerBoundCertServiceWorkers to be posted back to
+  // the ServerBoundCertService. (There will be more than two, one to track the
+  // failing lookup, and another to track the generation of the cert.)
+  base::MessageLoop::current()->RunUntilIdle();
 
   error = callback.WaitForResult();
   EXPECT_EQ(OK, error);
@@ -560,6 +566,9 @@ TEST_F(ServerBoundCertServiceTest, AsyncStoreGetOneCertInStore) {
 
   mock_store->CallGetServerBoundCertCallbackWithResult(
       OK, base::Time(), "ab", "cd");
+  // Wait for reply from ServerBoundCertServiceWorker to be posted back to the
+  // ServerBoundCertService.
+  base::MessageLoop::current()->RunUntilIdle();

[juanlang, 2013/08/09 04:48:52]

But here I believe I don't need to Flush(), because the result should be
immediately available. Please correct me if I'm wrong.

 
   error = callback.WaitForResult();
   EXPECT_EQ(OK, error);