Plumb AudioLog support into AudioManager.

AudioManager is now also an AudioLogFactory.  Changing the constructor
of AudioManager isn't viable due to its psuedo-singleton behavior, so
MediaInternal's AudioLogFactory must be injected after construction.

The next step after this CL is to have AudioOutputDispatcherImpl objects
own an AudioLog instance.

BUG=260005
TEST=none, just plumbing.

Review URL: https://codereview.chromium.org/99733004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238637 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 32 insertions, 0 deletions

diff --git a/media/audio/fake_audio_log_factory.cc b/media/audio/fake_audio_log_factory.cc
new file mode 100644
index 0000000..6f752e5
--- /dev/null
+++ b/media/audio/fake_audio_log_factory.cc
@@ -0,0 +1,32 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "media/audio/fake_audio_log_factory.h"
+
+namespace media {
+
+class FakeAudioLogImpl : public AudioLog {
+ public:
+  FakeAudioLogImpl() {}
+  virtual ~FakeAudioLogImpl() {}
+  virtual void OnCreated(int component_id,
+                         const media::AudioParameters& params,
+                         const std::string& input_device_id,
+                         const std::string& output_device_id) OVERRIDE {}
+  virtual void OnStarted(int component_id) OVERRIDE {}
+  virtual void OnStopped(int component_id) OVERRIDE {}
+  virtual void OnClosed(int component_id) OVERRIDE {}
+  virtual void OnError(int component_id) OVERRIDE {}
+  virtual void OnSetVolume(int component_id, double volume) OVERRIDE {}
+};
+
+FakeAudioLogFactory::FakeAudioLogFactory() {}
+FakeAudioLogFactory::~FakeAudioLogFactory() {}
+
+scoped_ptr<AudioLog> FakeAudioLogFactory::CreateAudioLog(
+    AudioComponent component) {
+  return scoped_ptr<AudioLog>(new FakeAudioLogImpl());
+}
+
+}  // namespace media