Add a platform implementation of QuicTest and QuicTestWithParam

net/quic/core/congestion_control/pacing_sender_test.cc

Index: net/quic/core/congestion_control/pacing_sender_test.cc
diff --git a/net/quic/core/congestion_control/pacing_sender_test.cc b/net/quic/core/congestion_control/pacing_sender_test.cc
index 7fc3019d0fd690967905ef37a49c3e545b99970d..174d93da223ed5bfab8e6d322392da665978357e 100644
--- a/net/quic/core/congestion_control/pacing_sender_test.cc
+++ b/net/quic/core/congestion_control/pacing_sender_test.cc
@@ -8,6 +8,7 @@
 
 #include "net/quic/core/quic_packets.h"
 #include "net/quic/platform/api/quic_logging.h"
+#include "net/quic/platform/api/quic_test.h"
 #include "net/quic/test_tools/mock_clock.h"
 #include "net/quic/test_tools/quic_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -22,7 +23,7 @@ namespace test {
 const QuicByteCount kBytesInFlight = 1024;
 const int kInitialBurstPackets = 10;
 
-class PacingSenderTest : public ::testing::Test {
+class PacingSenderTest : public QuicTest {
  protected:
   PacingSenderTest()
       : zero_time_(QuicTime::Delta::Zero()),