diff --git a/http2/decoder/http2_structure_decoder_test.cc b/http2/decoder/http2_structure_decoder_test.cc
index 7db9ba0..afec9d4 100644
--- a/http2/decoder/http2_structure_decoder_test.cc
+++ b/http2/decoder/http2_structure_decoder_test.cc
@@ -33,8 +33,6 @@
 #include "http2/tools/http2_frame_builder.h"
 #include "http2/tools/random_decoder_test.h"
 
-using ::testing::AssertionFailure;
-using ::testing::AssertionResult;
 using ::testing::AssertionSuccess;
 
 namespace http2 {
diff --git a/http2/decoder/payload_decoders/data_payload_decoder_test.cc b/http2/decoder/payload_decoders/data_payload_decoder_test.cc
index c74503b..aa7b5e8 100644
--- a/http2/decoder/payload_decoders/data_payload_decoder_test.cc
+++ b/http2/decoder/payload_decoders/data_payload_decoder_test.cc
@@ -22,8 +22,6 @@
 #include "http2/tools/random_decoder_test.h"
 #include "common/platform/api/quiche_test.h"
 
-using ::testing::AssertionResult;
-
 namespace http2 {
 namespace test {
 
diff --git a/http2/hpack/decoder/hpack_block_decoder_test.cc b/http2/hpack/decoder/hpack_block_decoder_test.cc
index 1f2ff39..216eba4 100644
--- a/http2/hpack/decoder/hpack_block_decoder_test.cc
+++ b/http2/hpack/decoder/hpack_block_decoder_test.cc
@@ -20,8 +20,6 @@
 #include "http2/tools/random_decoder_test.h"
 #include "common/platform/api/quiche_test.h"
 
-using ::testing::AssertionSuccess;
-
 namespace http2 {
 namespace test {
 namespace {
diff --git a/http2/hpack/decoder/hpack_decoder_test.cc b/http2/hpack/decoder/hpack_decoder_test.cc
index c160bfe..c1439f9 100644
--- a/http2/hpack/decoder/hpack_decoder_test.cc
+++ b/http2/hpack/decoder/hpack_decoder_test.cc
@@ -25,7 +25,6 @@
 #include "http2/tools/random_util.h"
 #include "common/platform/api/quiche_test.h"
 
-using ::testing::AssertionFailure;
 using ::testing::AssertionResult;
 using ::testing::AssertionSuccess;
 using ::testing::ElementsAreArray;
diff --git a/http2/hpack/decoder/hpack_entry_decoder_test.cc b/http2/hpack/decoder/hpack_entry_decoder_test.cc
index b885b18..32eeaf4 100644
--- a/http2/hpack/decoder/hpack_entry_decoder_test.cc
+++ b/http2/hpack/decoder/hpack_entry_decoder_test.cc
@@ -15,8 +15,6 @@
 #include "http2/tools/random_decoder_test.h"
 #include "common/platform/api/quiche_test.h"
 
-using ::testing::AssertionResult;
-
 namespace http2 {
 namespace test {
 namespace {
diff --git a/http2/hpack/decoder/hpack_entry_type_decoder_test.cc b/http2/hpack/decoder/hpack_entry_type_decoder_test.cc
index 8852064..8babd80 100644
--- a/http2/hpack/decoder/hpack_entry_type_decoder_test.cc
+++ b/http2/hpack/decoder/hpack_entry_type_decoder_test.cc
@@ -12,8 +12,6 @@
 #include "http2/tools/random_decoder_test.h"
 #include "common/platform/api/quiche_test.h"
 
-using ::testing::AssertionFailure;
-using ::testing::AssertionResult;
 using ::testing::AssertionSuccess;
 
 namespace http2 {
diff --git a/http2/hpack/decoder/hpack_string_decoder_test.cc b/http2/hpack/decoder/hpack_string_decoder_test.cc
index 0571f8d..6ff332f 100644
--- a/http2/hpack/decoder/hpack_string_decoder_test.cc
+++ b/http2/hpack/decoder/hpack_string_decoder_test.cc
@@ -15,8 +15,6 @@
 #include "http2/tools/random_decoder_test.h"
 #include "common/platform/api/quiche_test.h"
 
-using ::testing::AssertionResult;
-
 namespace http2 {
 namespace test {
 namespace {
diff --git a/http2/hpack/huffman/hpack_huffman_decoder_test.cc b/http2/hpack/huffman/hpack_huffman_decoder_test.cc
index 395706f..1e16086 100644
--- a/http2/hpack/huffman/hpack_huffman_decoder_test.cc
+++ b/http2/hpack/huffman/hpack_huffman_decoder_test.cc
@@ -16,8 +16,6 @@
 #include "http2/tools/random_decoder_test.h"
 #include "common/platform/api/quiche_test.h"
 
-using ::testing::AssertionResult;
-
 namespace http2 {
 namespace test {
 namespace {
diff --git a/http2/hpack/huffman/hpack_huffman_transcoder_test.cc b/http2/hpack/huffman/hpack_huffman_transcoder_test.cc
index 98a0478..671eb4f 100644
--- a/http2/hpack/huffman/hpack_huffman_transcoder_test.cc
+++ b/http2/hpack/huffman/hpack_huffman_transcoder_test.cc
@@ -15,7 +15,6 @@
 #include "common/platform/api/quiche_test.h"
 #include "common/quiche_text_utils.h"
 
-using ::testing::AssertionResult;
 using ::testing::AssertionSuccess;
 using ::testing::Combine;
 using ::testing::Range;