NetEq: Use a BuiltinAudioDecoderFactory to create decoders

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

Index: webrtc/modules/audio_coding/codecs/mock/mock_audio_decoder_factory.h
diff --git a/webrtc/modules/audio_coding/codecs/mock/mock_audio_decoder_factory.h b/webrtc/modules/audio_coding/codecs/mock/mock_audio_decoder_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..6e5737c89b87b792ebbbf6a7014b936d87493ed7
--- /dev/null
+++ b/webrtc/modules/audio_coding/codecs/mock/mock_audio_decoder_factory.h
@@ -0,0 +1,37 @@
+/*
+ *  Copyright (c) 2016 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.
+ */
+
+#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_MOCK_MOCK_AUDIO_DECODER_FACTORY_H_
+#define WEBRTC_MODULES_AUDIO_CODING_CODECS_MOCK_MOCK_AUDIO_DECODER_FACTORY_H_
+
+#include <vector>
+
+#include "testing/gmock/include/gmock/gmock.h"
+#include "webrtc/modules/audio_coding/codecs/audio_decoder_factory.h"
+
+namespace webrtc {
+
+class MockAudioDecoderFactory : public AudioDecoderFactory {
+ public:
+  MOCK_METHOD0(GetSupportedFormats, std::vector<SdpAudioFormat>());
+  std::unique_ptr<AudioDecoder> MakeAudioDecoder(
+      const SdpAudioFormat& format) {

[kwiberg-webrtc, 2016/05/02 20:20:00]

I had to remove the "override" here, because of the recently enabled
-Winconsistent-missing-override.

+    std::unique_ptr<AudioDecoder> return_value;
+    MakeAudioDecoderMock(format, &return_value);
+    return return_value;
+  }
+  MOCK_METHOD2(MakeAudioDecoderMock,
+               void(const SdpAudioFormat& format,
+                    std::unique_ptr<AudioDecoder>* return_value));
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_MOCK_MOCK_AUDIO_DECODER_FACTORY_H_