media: Simplify audio test names

media/base/audio_renderer_mixer_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.
 
 // MSVC++ requires this to be set before any other includes to get M_PI.
 #define _USE_MATH_DEFINES
 
 #include "media/base/audio_renderer_mixer.h"
 
 #include <stddef.h>
@@ skipping 533 matching lines @@
         // Both downsampling and upsampling, multiple input sample rates
         std::tr1::make_tuple(static_cast<const int* const>(kTestInput3Rates),
                              arraysize(kTestInput3Rates),
                              kTestInput3Rates[1],
                              0.01)));
 
 // Test cases for behavior which is independent of parameters.  Values() doesn't
 // support single item lists and we don't want these test cases to run for every
 // parameter set.
 INSTANTIATE_TEST_CASE_P(
-    AudioRendererMixerBehavioralTest,
+    /* no prefix */,
     AudioRendererMixerBehavioralTest,
     testing::ValuesIn(std::vector<AudioRendererMixerTestData>(
         1,
         std::tr1::make_tuple(&kTestInputLower,
                              1,
                              kTestInputLower,
                              0.00000048))));
 }  // namespace media