media-internals: Differentiate error, info, and debug log messages

media/base/test_helpers.cc

 // Copyright (c) 2012 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/test_helpers.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/pickle.h"
@@ skipping 242 matching lines @@
 void CallbackPairChecker::RecordACalled() {
   EXPECT_FALSE(expecting_b_);
   expecting_b_ = true;
 }
 
 void CallbackPairChecker::RecordBCalled() {
   EXPECT_TRUE(expecting_b_);
   expecting_b_ = false;
 }
 
+void AddLogEntryForTest(MediaLog::MediaLogLevel level,
+                        const std::string& message) {
+  DVLOG(1) << "Media log (" << MediaLog::MediaLogLevelToString(level)
+           << "): " << message;
+}
+
 }  // namespace media