Revert of Remove the deprecated EncodeInternal interface from AudioEncoder

webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder.h

Index: webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder.h
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 f898877c190e3924ac8c41d4cc930a17d382ba52..58a1e756f971a013e9615630c6fd1df7adb2dfd7 100644
--- a/webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder.h
+++ b/webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder.h
@@ -18,11 +18,12 @@
 
 namespace webrtc {
 
-class MockAudioEncoder : public AudioEncoder {
+class MockAudioEncoderBase : public AudioEncoder {
  public:
-  ~MockAudioEncoder() override { Die(); }
+  ~MockAudioEncoderBase() 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());
@@ -38,7 +39,10 @@
   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,
@@ -85,6 +89,36 @@
     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