Moved creation of AudioDecoderFactory to inside PeerConnectionFactory.

webrtc/test/mock_voe_channel_proxy.h

Index: webrtc/test/mock_voe_channel_proxy.h
diff --git a/webrtc/test/mock_voe_channel_proxy.h b/webrtc/test/mock_voe_channel_proxy.h
index a27a739006edfaffb9aff16f23abf87872cb571d..cc2c32b3736931bb02e34ea0771a3da4949a2c43 100644
--- a/webrtc/test/mock_voe_channel_proxy.h
+++ b/webrtc/test/mock_voe_channel_proxy.h
@@ -50,6 +50,8 @@ class MockVoEChannelProxy : public voe::ChannelProxy {
                                        size_t length,
                                        const PacketTime& packet_time));
   MOCK_METHOD2(ReceivedRTCPPacket, bool(const uint8_t* packet, size_t length));
+  MOCK_CONST_METHOD0(GetAudioDecoderFactory,
+                     const rtc::scoped_refptr<AudioDecoderFactory>&());
 };
 }  // namespace test
 }  // namespace webrtc