Remove unused parameter to OnError()

media/audio/simple_sources_unittest.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 <limits>
 
 #include "base/logging.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/audio/audio_parameters.h"
@@ skipping 51 matching lines @@
   EXPECT_EQ(2, source.callbacks());
   source.Reset();
   EXPECT_EQ(source.OnMoreData(
       audio_bus.get(), AudioBuffersState()), kSampleCap);
   EXPECT_EQ(3, source.callbacks());
   EXPECT_EQ(0, source.errors());
 }
 
 TEST(SimpleSources, OnError) {
   SineWaveAudioSource source(1, 200, AudioParameters::kTelephoneSampleRate);
-  source.OnError(NULL, 0);
+  source.OnError(NULL);
   EXPECT_EQ(1, source.errors());
-  source.OnError(NULL, 0);
+  source.OnError(NULL);
   EXPECT_EQ(2, source.errors());
 }
 
 }  // namespace media