Don't link with audio codecs that we don't use

webrtc/modules/audio_coding/neteq/decoder_database_unittest.cc

 /*
  *  Copyright (c) 2012 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.
  */
 
@@ skipping 154 matching lines @@
   EXPECT_EQ(DecoderDatabase::kOK, db.CheckPayloadTypes(packet_list));
 
   // Delete all packets.
   PacketList::iterator it = packet_list.begin();
   while (it != packet_list.end()) {
     delete packet_list.front();
     it = packet_list.erase(it);
   }
 }
 
+#if defined(WEBRTC_CODEC_ISAC) || defined(WEBRTC_CODEC_ISACFX)
+#define IF_ISAC(x) x
+#else
+#define IF_ISAC(x) DISABLED_##x
+#endif
+
 // Test the methods for setting and getting active speech and CNG decoders.
-TEST(DecoderDatabase, ActiveDecoders) {
+TEST(DecoderDatabase, IF_ISAC(ActiveDecoders)) {
   DecoderDatabase db;
   // Load payload types.
   ASSERT_EQ(DecoderDatabase::kOK, db.RegisterPayload(0, kDecoderPCMu));
   ASSERT_EQ(DecoderDatabase::kOK, db.RegisterPayload(103, kDecoderISAC));
   ASSERT_EQ(DecoderDatabase::kOK, db.RegisterPayload(13, kDecoderCNGnb));
   // Verify that no decoders are active from the start.
   EXPECT_EQ(NULL, db.GetActiveDecoder());
   EXPECT_EQ(NULL, db.GetActiveCngDecoder());
 
   // Set active speech codec.
@@ skipping 28 matching lines @@
   EXPECT_EQ(DecoderDatabase::kOK, db.Remove(13));
   EXPECT_EQ(NULL, db.GetActiveCngDecoder());
 
   // Try to set non-existing codecs as active.
   EXPECT_EQ(DecoderDatabase::kDecoderNotFound,
             db.SetActiveDecoder(17, &changed));
   EXPECT_EQ(DecoderDatabase::kDecoderNotFound,
             db.SetActiveCngDecoder(17));
 }
 }  // namespace webrtc