Refactor audio and video decoder status into common file.

media/base/decoder_status.cc

Index: media/base/decoder_status.cc
diff --git a/media/base/decoder_status.cc b/media/base/decoder_status.cc
new file mode 100644
index 0000000000000000000000000000000000000000..80c7c03e586012e0b922c34e9aa11b127319173e
--- /dev/null
+++ b/media/base/decoder_status.cc
@@ -0,0 +1,24 @@
+// Copyright 2016 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/base/decoder_status.h"
+
+namespace media {
+
+std::ostream& operator<<(std::ostream& os, const DecoderStatus& status) {
+  switch (status) {
+    case DecoderStatus::OK:
+      os << "DecoderStatus::OK";
+      break;
+    case DecoderStatus::ABORTED:
+      os << "DecoderStatus::ABORTED";
+      break;
+    case DecoderStatus::DECODE_ERROR:
+      os << "DecoderStatus::DECODE_ERROR";
+      break;
+  }
+  return os;
+}
+
+}  // namespace media