AudioCodingModule::Create(): Require caller to supply an AudioDecoderFactory

So that we don't have to be capable of creating one ourselves, which
requires a dependency on the audio decoders.

BUG=webrtc:5801, webrtc:8396

Change-Id: I80749ec3b86cba73994307046d05964f59167d44
Reviewed-on: https://webrtc-review.googlesource.com/18440
Commit-Queue: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Oskar Sundbom <ossu@webrtc.org>
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22774}
diff --git a/modules/audio_coding/test/TestAllCodecs.cc b/modules/audio_coding/test/TestAllCodecs.cc
index 3a968c9..f8debe9 100644
--- a/modules/audio_coding/test/TestAllCodecs.cc
+++ b/modules/audio_coding/test/TestAllCodecs.cc
@@ -14,6 +14,7 @@
 #include <limits>
 #include <string>
 
+#include "api/audio_codecs/builtin_audio_decoder_factory.h"
 #include "common_types.h"  // NOLINT(build/include)
 #include "modules/audio_coding/codecs/audio_format_conversion.h"
 #include "modules/audio_coding/include/audio_coding_module.h"
@@ -104,8 +105,10 @@
 }
 
 TestAllCodecs::TestAllCodecs(int test_mode)
-    : acm_a_(AudioCodingModule::Create()),
-      acm_b_(AudioCodingModule::Create()),
+    : acm_a_(AudioCodingModule::Create(
+          AudioCodingModule::Config(CreateBuiltinAudioDecoderFactory()))),
+      acm_b_(AudioCodingModule::Create(
+          AudioCodingModule::Config(CreateBuiltinAudioDecoderFactory()))),
       channel_a_to_b_(NULL),
       test_count_(0),
       packet_size_samples_(0),