Reimplement the builtin audio codec factories using the new stuff in api/

webrtc/api/audio_codecs/test/audio_encoder_factory_template_unittest.cc

 /*
  *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 129 matching lines @@
   EXPECT_EQ(8000, enc1->SampleRateHz());
   auto enc2 = factory->MakeAudioEncoder(17, {"PCMA", 8000, 1});
   ASSERT_NE(nullptr, enc2);
   EXPECT_EQ(8000, enc2->SampleRateHz());
 }
 
 TEST(AudioEncoderFactoryTemplateTest, G722) {
   auto factory = CreateAudioEncoderFactory<AudioEncoderG722>();
   EXPECT_THAT(factory->GetSupportedEncoders(),
               testing::ElementsAre(
-                  AudioCodecSpec{{"g722", 8000, 1}, {16000, 1, 64000}}));
+                  AudioCodecSpec{{"G722", 8000, 1}, {16000, 1, 64000}}));
   EXPECT_EQ(rtc::Optional<AudioCodecInfo>(),
             factory->QueryAudioEncoder({"foo", 8000, 1}));
   EXPECT_EQ(rtc::Optional<AudioCodecInfo>({16000, 1, 64000}),
-            factory->QueryAudioEncoder({"g722", 8000, 1}));
+            factory->QueryAudioEncoder({"G722", 8000, 1}));
   EXPECT_EQ(nullptr, factory->MakeAudioEncoder(17, {"bar", 16000, 1}));
-  auto enc = factory->MakeAudioEncoder(17, {"g722", 8000, 1});
+  auto enc = factory->MakeAudioEncoder(17, {"G722", 8000, 1});
   ASSERT_NE(nullptr, enc);
   EXPECT_EQ(16000, enc->SampleRateHz());
 }
 
 TEST(AudioEncoderFactoryTemplateTest, Ilbc) {
   auto factory = CreateAudioEncoderFactory<AudioEncoderIlbc>();
   EXPECT_THAT(factory->GetSupportedEncoders(),
               testing::ElementsAre(
                   AudioCodecSpec{{"ILBC", 8000, 1}, {8000, 1, 13333}}));
   EXPECT_EQ(rtc::Optional<AudioCodecInfo>(),
@@ skipping 87 matching lines @@
       rtc::Optional<AudioCodecInfo>(info),
       factory->QueryAudioEncoder(
           {"opus", 48000, 2, {{"minptime", "10"}, {"useinbandfec", "1"}}}));
   EXPECT_EQ(nullptr, factory->MakeAudioEncoder(17, {"bar", 16000, 1}));
   auto enc = factory->MakeAudioEncoder(17, {"opus", 48000, 2});
   ASSERT_NE(nullptr, enc);
   EXPECT_EQ(48000, enc->SampleRateHz());
 }
 
 }  // namespace webrtc