Replace rtc::Optional with absl::optional in modules/audio_coding

This is a no-op change because rtc::Optional is an alias to absl::optional

This CL generated by running script with parameter 'modules/audio_coding'

find $@ -type f \( -name \*.h -o -name \*.cc \) \
-exec sed -i 's|rtc::Optional|absl::optional|g' {} \+ \
-exec sed -i 's|rtc::nullopt|absl::nullopt|g' {} \+ \
-exec sed -i 's|#include "api/optional.h"|#include "absl/types/optional.h"|' {} \+

find $@ -type f -name BUILD.gn \
-exec sed -r -i 's|"[\./api]*:optional"|"//third_party/abseil-cpp/absl/types:optional"|' {} \+;

git cl format

Bug: webrtc:9078
Change-Id: Ic980ee605148fdb160666d4aa03cc87175e48fe8
Reviewed-on: https://webrtc-review.googlesource.com/84130
Reviewed-by: Oskar Sundbom <ossu@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23659}
diff --git a/modules/audio_coding/neteq/packet_buffer_unittest.cc b/modules/audio_coding/neteq/packet_buffer_unittest.cc
index 1aaed8b..cb40d7d 100644
--- a/modules/audio_coding/neteq/packet_buffer_unittest.cc
+++ b/modules/audio_coding/neteq/packet_buffer_unittest.cc
@@ -176,21 +176,21 @@
   MockDecoderDatabase decoder_database;
   auto factory = CreateBuiltinAudioDecoderFactory();
   const DecoderDatabase::DecoderInfo info(NetEqDecoder::kDecoderPCMu,
-                                          rtc::nullopt, factory);
+                                          absl::nullopt, factory);
   EXPECT_CALL(decoder_database, GetDecoderInfo(0))
       .WillRepeatedly(Return(&info));
 
   StrictMock<MockStatisticsCalculator> mock_stats;
 
-  rtc::Optional<uint8_t> current_pt;
-  rtc::Optional<uint8_t> current_cng_pt;
+  absl::optional<uint8_t> current_pt;
+  absl::optional<uint8_t> current_cng_pt;
   EXPECT_EQ(PacketBuffer::kOK,
             buffer.InsertPacketList(&list, decoder_database, &current_pt,
                                     &current_cng_pt, &mock_stats));
   EXPECT_TRUE(list.empty());  // The PacketBuffer should have depleted the list.
   EXPECT_EQ(10u, buffer.NumPacketsInBuffer());
   EXPECT_EQ(0, current_pt);      // Current payload type changed to 0.
-  EXPECT_EQ(rtc::nullopt, current_cng_pt);  // CNG payload type not changed.
+  EXPECT_EQ(absl::nullopt, current_cng_pt);  // CNG payload type not changed.
 
   buffer.Flush();  // Clean up.
 
@@ -221,25 +221,25 @@
   MockDecoderDatabase decoder_database;
   auto factory = CreateBuiltinAudioDecoderFactory();
   const DecoderDatabase::DecoderInfo info0(NetEqDecoder::kDecoderPCMu,
-                                           rtc::nullopt, factory);
+                                           absl::nullopt, factory);
   EXPECT_CALL(decoder_database, GetDecoderInfo(0))
       .WillRepeatedly(Return(&info0));
   const DecoderDatabase::DecoderInfo info1(NetEqDecoder::kDecoderPCMa,
-                                           rtc::nullopt, factory);
+                                           absl::nullopt, factory);
   EXPECT_CALL(decoder_database, GetDecoderInfo(1))
       .WillRepeatedly(Return(&info1));
 
   StrictMock<MockStatisticsCalculator> mock_stats;
 
-  rtc::Optional<uint8_t> current_pt;
-  rtc::Optional<uint8_t> current_cng_pt;
+  absl::optional<uint8_t> current_pt;
+  absl::optional<uint8_t> current_cng_pt;
   EXPECT_EQ(PacketBuffer::kFlushed,
             buffer.InsertPacketList(&list, decoder_database, &current_pt,
                                     &current_cng_pt, &mock_stats));
   EXPECT_TRUE(list.empty());  // The PacketBuffer should have depleted the list.
   EXPECT_EQ(1u, buffer.NumPacketsInBuffer());  // Only the last packet.
   EXPECT_EQ(1, current_pt);      // Current payload type changed to 1.
-  EXPECT_EQ(rtc::nullopt, current_cng_pt);  // CNG payload type not changed.
+  EXPECT_EQ(absl::nullopt, current_cng_pt);  // CNG payload type not changed.
 
   buffer.Flush();  // Clean up.
 
@@ -313,7 +313,7 @@
   EXPECT_EQ(kExpectPacketsInBuffer, buffer.NumPacketsInBuffer());
 
   for (size_t i = 0; i < kExpectPacketsInBuffer; ++i) {
-    const rtc::Optional<Packet> packet = buffer.GetNextPacket();
+    const absl::optional<Packet> packet = buffer.GetNextPacket();
     EXPECT_EQ(packet, expect_order[i]);  // Compare contents.
   }
   EXPECT_TRUE(buffer.Empty());
@@ -408,11 +408,11 @@
   MockDecoderDatabase decoder_database;
   auto factory = CreateBuiltinAudioDecoderFactory();
   const DecoderDatabase::DecoderInfo info(NetEqDecoder::kDecoderPCMu,
-                                          rtc::nullopt, factory);
+                                          absl::nullopt, factory);
   EXPECT_CALL(decoder_database, GetDecoderInfo(0))
       .WillRepeatedly(Return(&info));
-  rtc::Optional<uint8_t> current_pt;
-  rtc::Optional<uint8_t> current_cng_pt;
+  absl::optional<uint8_t> current_pt;
+  absl::optional<uint8_t> current_cng_pt;
 
   StrictMock<MockStatisticsCalculator> mock_stats;
 
@@ -424,7 +424,7 @@
   // Extract them and make sure that come out in the right order.
   uint32_t current_ts = start_ts;
   for (int i = 0; i < 10; ++i) {
-    const rtc::Optional<Packet> packet = buffer.GetNextPacket();
+    const absl::optional<Packet> packet = buffer.GetNextPacket();
     ASSERT_TRUE(packet);
     EXPECT_EQ(current_ts, packet->timestamp);
     current_ts += ts_increment;
@@ -448,11 +448,11 @@
   MockDecoderDatabase decoder_database;
   auto factory = CreateBuiltinAudioDecoderFactory();
   const DecoderDatabase::DecoderInfo info_cng(NetEqDecoder::kDecoderCNGnb,
-                                              rtc::nullopt, factory);
+                                              absl::nullopt, factory);
   EXPECT_CALL(decoder_database, GetDecoderInfo(kCngPt))
       .WillRepeatedly(Return(&info_cng));
   const DecoderDatabase::DecoderInfo info_speech(NetEqDecoder::kDecoderPCM16Bwb,
-                                                 rtc::nullopt, factory);
+                                                 absl::nullopt, factory);
   EXPECT_CALL(decoder_database, GetDecoderInfo(kSpeechPt))
       .WillRepeatedly(Return(&info_speech));
 
@@ -460,8 +460,8 @@
   PacketGenerator gen(0, 0, kCngPt, 10);
   PacketList list;
   list.push_back(gen.NextPacket(kPayloadLen));
-  rtc::Optional<uint8_t> current_pt;
-  rtc::Optional<uint8_t> current_cng_pt;
+  absl::optional<uint8_t> current_pt;
+  absl::optional<uint8_t> current_cng_pt;
 
   StrictMock<MockStatisticsCalculator> mock_stats;
 
@@ -472,7 +472,7 @@
   EXPECT_EQ(1u, buffer.NumPacketsInBuffer());
   ASSERT_TRUE(buffer.PeekNextPacket());
   EXPECT_EQ(kCngPt, buffer.PeekNextPacket()->payload_type);
-  EXPECT_EQ(current_pt, rtc::nullopt);  // Current payload type not set.
+  EXPECT_EQ(current_pt, absl::nullopt);  // Current payload type not set.
   EXPECT_EQ(kCngPt, current_cng_pt);  // CNG payload type set.
 
   // Insert second packet, which is wide-band speech.
@@ -492,7 +492,7 @@
   EXPECT_EQ(kSpeechPt, buffer.PeekNextPacket()->payload_type);
 
   EXPECT_EQ(kSpeechPt, current_pt);  // Current payload type set.
-  EXPECT_EQ(rtc::nullopt, current_cng_pt);  // CNG payload type reset.
+  EXPECT_EQ(absl::nullopt, current_cng_pt);  // CNG payload type reset.
 
   buffer.Flush();                        // Clean up.
   EXPECT_CALL(decoder_database, Die());  // Called when object is deleted.
@@ -550,11 +550,11 @@
   MockDecoderDatabase decoder_database;
   auto factory = CreateBuiltinAudioDecoderFactory();
   const DecoderDatabase::DecoderInfo info(NetEqDecoder::kDecoderPCMu,
-                                          rtc::nullopt, factory);
+                                          absl::nullopt, factory);
   EXPECT_CALL(decoder_database, GetDecoderInfo(0))
       .WillRepeatedly(Return(&info));
-  rtc::Optional<uint8_t> current_pt;
-  rtc::Optional<uint8_t> current_cng_pt;
+  absl::optional<uint8_t> current_pt;
+  absl::optional<uint8_t> current_cng_pt;
   EXPECT_EQ(PacketBuffer::kInvalidPacket,
             buffer->InsertPacketList(&list, decoder_database, &current_pt,
                                      &current_cng_pt, &mock_stats));