base: Remove the string logging from CHECK().

net/quic/test_tools/quic_test_utils.cc

Index: net/quic/test_tools/quic_test_utils.cc
diff --git a/net/quic/test_tools/quic_test_utils.cc b/net/quic/test_tools/quic_test_utils.cc
index bf4055dd76bb69ee98f56391e5d3463d3fad428b..7ca65ee8288f38f57001a31e07fc1eaf3fe32c97 100644
--- a/net/quic/test_tools/quic_test_utils.cc
+++ b/net/quic/test_tools/quic_test_utils.cc
@@ -84,10 +84,9 @@ QuicPacket* BuildUnsizedDataPacket(QuicFramer* framer,
 }
 
 QuicFlagSaver::QuicFlagSaver() {
-#define QUIC_FLAG(type, flag, value)                                          \
-  CHECK_EQ(value, flag) << "Flag set to an expected value.  A prior test is " \
-                           "likely setting a flag "                           \
-                        << "without using a QuicFlagSaver";
+// This checks that |flag| is set to an expected value.  A prior test is
+// likely setting a flag without using a QuicFlagSaver if this fails.
+#define QUIC_FLAG(type, flag, value) CHECK_EQ(value, flag);
 #include "net/quic/core/quic_flags_list.h"
 #undef QUIC_FLAG
 }
@@ -851,9 +850,9 @@ void CreateClientSessionForTest(QuicServerId server_id,
   CHECK(crypto_client_config);
   CHECK(client_connection);
   CHECK(client_session);
-  CHECK(!connection_start_time.IsZero())
-      << "Connections must start at non-zero times, otherwise the "
-      << "strike-register will be unhappy.";
+  // Connections must start at non-zero times, otherwise the strike-register
+  // will be unhappy.
+  CHECK(!connection_start_time.IsZero());
 
   QuicConfig config = supports_stateless_rejects
                           ? DefaultQuicConfigStatelessRejects()
@@ -878,9 +877,9 @@ void CreateServerSessionForTest(
   CHECK(server_crypto_config);
   CHECK(server_connection);
   CHECK(server_session);
-  CHECK(!connection_start_time.IsZero())
-      << "Connections must start at non-zero times, otherwise the "
-      << "strike-register will be unhappy.";
+  // Connections must start at non-zero times, otherwise the strike-register
+  // will be unhappy.
+  CHECK(!connection_start_time.IsZero());
 
   *server_connection = new PacketSavingConnection(
       helper, alarm_factory, Perspective::IS_SERVER, supported_versions);