Use QuicheTest and quiche_test.h in third_party/http2.

The motivation is that these files have to be included with
#pragma clang diagnostic ignored "-Weverything", otherwise CLs touching test
files will not build.

PiperOrigin-RevId: 334632337
Change-Id: I74d8cdef4b07eed79880d1ca7e0476b3a2c5c184
diff --git a/http2/hpack/varint/hpack_varint_decoder_test.cc b/http2/hpack/varint/hpack_varint_decoder_test.cc
index 450751f..06554e9 100644
--- a/http2/hpack/varint/hpack_varint_decoder_test.cc
+++ b/http2/hpack/varint/hpack_varint_decoder_test.cc
@@ -8,12 +8,12 @@
 
 #include <stddef.h>
 
-#include "testing/gtest/include/gtest/gtest.h"
 #include "net/third_party/quiche/src/http2/platform/api/http2_logging.h"
 #include "net/third_party/quiche/src/http2/platform/api/http2_string_utils.h"
 #include "net/third_party/quiche/src/http2/tools/random_decoder_test.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_arraysize.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"
+#include "net/third_party/quiche/src/common/platform/api/quiche_test.h"
 
 using ::testing::AssertionFailure;
 using ::testing::AssertionSuccess;
diff --git a/http2/hpack/varint/hpack_varint_encoder_test.cc b/http2/hpack/varint/hpack_varint_encoder_test.cc
index 22de704..dcbff8a 100644
--- a/http2/hpack/varint/hpack_varint_encoder_test.cc
+++ b/http2/hpack/varint/hpack_varint_encoder_test.cc
@@ -7,7 +7,7 @@
 #include "net/third_party/quiche/src/http2/platform/api/http2_string_utils.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_arraysize.h"
 
-#include "testing/gtest/include/gtest/gtest.h"
+#include "net/third_party/quiche/src/common/platform/api/quiche_test.h"
 
 namespace http2 {
 namespace test {
diff --git a/http2/hpack/varint/hpack_varint_round_trip_test.cc b/http2/hpack/varint/hpack_varint_round_trip_test.cc
index 77e5fe8..e8a0964 100644
--- a/http2/hpack/varint/hpack_varint_round_trip_test.cc
+++ b/http2/hpack/varint/hpack_varint_round_trip_test.cc
@@ -13,13 +13,13 @@
 #include <set>
 #include <vector>
 
-#include "testing/gtest/include/gtest/gtest.h"
 #include "net/third_party/quiche/src/http2/hpack/tools/hpack_block_builder.h"
 #include "net/third_party/quiche/src/http2/platform/api/http2_logging.h"
 #include "net/third_party/quiche/src/http2/platform/api/http2_string_utils.h"
 #include "net/third_party/quiche/src/http2/tools/random_decoder_test.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_str_cat.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"
+#include "net/third_party/quiche/src/common/platform/api/quiche_test.h"
 
 using ::testing::AssertionFailure;
 using ::testing::AssertionSuccess;