Replace calls to deprecated googletest macros *TEST_CASE() with *TEST_SUITE().

There is no semantic change; this is just a rename.
This change replaces the TEST_CASE, TestCase() family of APIs provided by googletest with TEST_SUITE, TestSuite() APIs.

PiperOrigin-RevId: 231706070
Change-Id: I32eeb007ac265afe26f76198abaea867f1cea1e2
diff --git a/http2/decoder/payload_decoders/headers_payload_decoder_test.cc b/http2/decoder/payload_decoders/headers_payload_decoder_test.cc
index a6fcb65..cb58b8e 100644
--- a/http2/decoder/payload_decoders/headers_payload_decoder_test.cc
+++ b/http2/decoder/payload_decoders/headers_payload_decoder_test.cc
@@ -94,9 +94,8 @@
                                                 HeadersPayloadDecoderPeer,
                                                 Listener> {};
 
-INSTANTIATE_TEST_CASE_P(VariousPadLengths,
-                        HeadersPayloadDecoderTest,
-                        ::testing::Values(0, 1, 2, 3, 4, 254, 255, 256));
+INSTANTIATE_TEST_SUITE_P(VariousPadLengths, HeadersPayloadDecoderTest,
+                         ::testing::Values(0, 1, 2, 3, 4, 254, 255, 256));
 
 // Decode various sizes of (fake) HPACK payload, both with and without the
 // PRIORITY flag set.