Fixup use of gunit and gmock in QUIC

This CL makes it so QUIC code only relies on gunit and gmock inside impl. This was found to be causing build issues when compiling with --config=no_modules.

gfe-relnote: n/a, build-only changes
PiperOrigin-RevId: 245494431
Change-Id: I82ff873a08631212a9d74ce4df707b3aeaba2386
diff --git a/quic/core/qpack/qpack_decoder_test_utils.h b/quic/core/qpack/qpack_decoder_test_utils.h
index ca5b608..55761b6 100644
--- a/quic/core/qpack/qpack_decoder_test_utils.h
+++ b/quic/core/qpack/qpack_decoder_test_utils.h
@@ -5,11 +5,11 @@
 #ifndef QUICHE_QUIC_CORE_QPACK_QPACK_DECODER_TEST_UTILS_H_
 #define QUICHE_QUIC_CORE_QPACK_QPACK_DECODER_TEST_UTILS_H_
 
-#include "testing/gmock/include/gmock/gmock.h"
 #include "net/third_party/quiche/src/quic/core/qpack/qpack_decoder.h"
 #include "net/third_party/quiche/src/quic/core/qpack/qpack_progressive_decoder.h"
 #include "net/third_party/quiche/src/quic/core/qpack/qpack_test_utils.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
 #include "net/third_party/quiche/src/spdy/core/spdy_header_block.h"
 
 namespace quic {