Turned AudioDecoderFactory into a RefCounted thing to use with scoped_refptr.

webrtc/modules/audio_coding/neteq/decision_logic_unittest.cc

Index: webrtc/modules/audio_coding/neteq/decision_logic_unittest.cc
diff --git a/webrtc/modules/audio_coding/neteq/decision_logic_unittest.cc b/webrtc/modules/audio_coding/neteq/decision_logic_unittest.cc
index ebb366890b38ba8796ffd5e995686e98de6b9e22..b18e952e278871f5899943dc96c5bb97a1dd5e13 100644
--- a/webrtc/modules/audio_coding/neteq/decision_logic_unittest.cc
+++ b/webrtc/modules/audio_coding/neteq/decision_logic_unittest.cc
@@ -25,8 +25,7 @@ namespace webrtc {
 TEST(DecisionLogic, CreateAndDestroy) {
   int fs_hz = 8000;
   int output_size_samples = fs_hz / 100;  // Samples per 10 ms.
-  DecoderDatabase decoder_database(
-      std::unique_ptr<MockAudioDecoderFactory>(new MockAudioDecoderFactory));
+  DecoderDatabase decoder_database(new MockAudioDecoderFactory);
   TickTimer tick_timer;
   PacketBuffer packet_buffer(10, &tick_timer);
   DelayPeakDetector delay_peak_detector(&tick_timer);