Stop using Googletest legacy APIs.

Googletest recently started replacing the term Test Case by Test Suite.
From now on, the preferred API is TestSuite*; the older TestCase* API
will be slowly deprecated.

This CL moves WebRTC to the new set of APIs.

More info in [1].

This CL has been generated with this script:

declare -A items
items[TYPED_TEST_CASE]=TYPED_TEST_SUITE
items[TYPED_TEST_CASE_P]=TYPED_TEST_SUITE_P
items[REGISTER_TYPED_TEST_CASE_P]=REGISTER_TYPED_TEST_SUITE_P
items[INSTANTIATE_TYPED_TEST_CASE_P]=INSTANTIATE_TYPED_TEST_SUITE_P
items[INSTANTIATE_TEST_CASE_P]=INSTANTIATE_TEST_SUITE_P
for i in "${!items[@]}"
do
  git ls-files | xargs sed -i "s/\b$i\b/${items[$i]}/g"
done
git cl format

[1] - https://github.com/google/googletest/blob/master/googletest/docs/primer.md#beware-of-the-nomenclature

Bug: None
Change-Id: I5ae191e3046caf347aeee01554d5743548ab0e3f
Reviewed-on: https://webrtc-review.googlesource.com/c/118701
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26494}
diff --git a/modules/audio_coding/codecs/opus/opus_fec_test.cc b/modules/audio_coding/codecs/opus/opus_fec_test.cc
index cd70821..7552c20 100644
--- a/modules/audio_coding/codecs/opus/opus_fec_test.cc
+++ b/modules/audio_coding/codecs/opus/opus_fec_test.cc
@@ -238,6 +238,6 @@
                     string("pcm"))};
 
 // 64 kbps, stereo
-INSTANTIATE_TEST_CASE_P(AllTest, OpusFecTest, ::testing::ValuesIn(param_set));
+INSTANTIATE_TEST_SUITE_P(AllTest, OpusFecTest, ::testing::ValuesIn(param_set));
 
 }  // namespace webrtc
diff --git a/modules/audio_coding/codecs/opus/opus_speed_test.cc b/modules/audio_coding/codecs/opus/opus_speed_test.cc
index 03b59ed..bf757f6 100644
--- a/modules/audio_coding/codecs/opus/opus_speed_test.cc
+++ b/modules/audio_coding/codecs/opus/opus_speed_test.cc
@@ -140,6 +140,8 @@
                     string("pcm"),
                     true)};
 
-INSTANTIATE_TEST_CASE_P(AllTest, OpusSpeedTest, ::testing::ValuesIn(param_set));
+INSTANTIATE_TEST_SUITE_P(AllTest,
+                         OpusSpeedTest,
+                         ::testing::ValuesIn(param_set));
 
 }  // namespace webrtc
diff --git a/modules/audio_coding/codecs/opus/opus_unittest.cc b/modules/audio_coding/codecs/opus/opus_unittest.cc
index de08827..56dfd6a 100644
--- a/modules/audio_coding/codecs/opus/opus_unittest.cc
+++ b/modules/audio_coding/codecs/opus/opus_unittest.cc
@@ -810,8 +810,8 @@
   EXPECT_EQ(0, WebRtcOpus_DecoderFree(opus_decoder_));
 }
 
-INSTANTIATE_TEST_CASE_P(VariousMode,
-                        OpusTest,
-                        Combine(Values(1, 2, 4), Values(0, 1)));
+INSTANTIATE_TEST_SUITE_P(VariousMode,
+                         OpusTest,
+                         Combine(Values(1, 2, 4), Values(0, 1)));
 
 }  // namespace webrtc
diff --git a/modules/audio_coding/codecs/opus/test/audio_ring_buffer_unittest.cc b/modules/audio_coding/codecs/opus/test/audio_ring_buffer_unittest.cc
index e26df3a..5c44bc5 100644
--- a/modules/audio_coding/codecs/opus/test/audio_ring_buffer_unittest.cc
+++ b/modules/audio_coding/codecs/opus/test/audio_ring_buffer_unittest.cc
@@ -82,7 +82,7 @@
       EXPECT_EQ(input.channels()[i][j], output.channels()[i][j]);
 }
 
-INSTANTIATE_TEST_CASE_P(
+INSTANTIATE_TEST_SUITE_P(
     AudioRingBufferTest,
     AudioRingBufferTest,
     ::testing::Combine(::testing::Values(10, 20, 42),  // num_write_chunk_frames