Reland Remove the deprecated EncodeInternal interface from AudioEncoder

Remove the deprecated EncodeInternal interface from AudioEncoder

Also hid MaxEncodedBytes by making it private. It will get removed as soon as subclasses have had time to remove their overrides.

BUG=webrtc:5591

Review URL: https://codereview.webrtc.org/1881003003

Cr-Commit-Position: refs/heads/master@{#12409}
diff --git a/webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder.h b/webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder.h
index 58a1e75..f898877 100644
--- a/webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder.h
+++ b/webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder.h
@@ -18,12 +18,11 @@
 
 namespace webrtc {
 
-class MockAudioEncoderBase : public AudioEncoder {
+class MockAudioEncoder : public AudioEncoder {
  public:
-  ~MockAudioEncoderBase() override { Die(); }
+  ~MockAudioEncoder() override { Die(); }
   MOCK_METHOD0(Die, void());
   MOCK_METHOD1(Mark, void(std::string desc));
-  MOCK_CONST_METHOD0(MaxEncodedBytes, size_t());
   MOCK_CONST_METHOD0(SampleRateHz, int());
   MOCK_CONST_METHOD0(NumChannels, size_t());
   MOCK_CONST_METHOD0(RtpTimestampRateHz, int());
@@ -39,10 +38,7 @@
   MOCK_METHOD1(SetTargetBitrate, void(int target_bps));
   MOCK_METHOD1(SetMaxBitrate, void(int max_bps));
   MOCK_METHOD1(SetMaxPayloadSize, void(int max_payload_size_bytes));
-};
 
-class MockAudioEncoder final : public MockAudioEncoderBase {
- public:
   // Note, we explicitly chose not to create a mock for the Encode method.
   MOCK_METHOD3(EncodeImpl,
                EncodedInfo(uint32_t timestamp,
@@ -89,36 +85,6 @@
     AudioEncoder::EncodedInfo info_;
     rtc::ArrayView<const uint8_t> payload_;
   };
-
-};
-
-class MockAudioEncoderDeprecated final : public MockAudioEncoderBase {
- public:
-  // Note, we explicitly chose not to create a mock for the Encode method.
-  MOCK_METHOD4(EncodeInternal,
-               EncodedInfo(uint32_t timestamp,
-                           rtc::ArrayView<const int16_t> audio,
-                           size_t max_encoded_bytes,
-                           uint8_t* encoded));
-
-  // A functor like MockAudioEncoder::CopyEncoding above, but which has the
-  // deprecated Encode signature. Currently only used in one test and should be
-  // removed once that backwards compatibility is.
-  class CopyEncoding {
-   public:
-    CopyEncoding(AudioEncoder::EncodedInfo info,
-                 rtc::ArrayView<const uint8_t> payload);
-
-    CopyEncoding(rtc::ArrayView<const uint8_t> payload);
-
-    AudioEncoder::EncodedInfo operator()(uint32_t timestamp,
-                                         rtc::ArrayView<const int16_t> audio,
-                                         size_t max_bytes_encoded,
-                                         uint8_t* encoded);
-   private:
-    AudioEncoder::EncodedInfo info_;
-    rtc::ArrayView<const uint8_t> payload_;
-  };
 };
 
 }  // namespace webrtc