Fix duplicate test names in WebAudio tests

third_party/WebKit/LayoutTests/webaudio/resources/audit-util.js

 // 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.
 
 
 /**
  * @fileOverview  This file includes legacy utility functions for the layout
  *                test.
  */
 
@@ skipping 196 matching lines @@
         // an exact match between it and the actual floating-point result.
         if (Math.abs(diff) > scaleFactor)
             diffCount++;
     }
 
     var snr = 10 * Math.log10(signalPower / noisePower);
     var maxErrorULP = maxError * scaleFactor;
 
     Should("SNR", snr).beGreaterThanOrEqualTo(thresholdSNR);
 
-    Should('Maximum difference (in ulp units (' + bitDepth + '-bits))',
+    Should(options.prefix + ': Maximum difference (in ulp units (' + bitDepth + '-bits))',
       maxErrorULP).beLessThanOrEqualTo(thresholdDiffULP);
 
-    Should('Number of differences between results', diffCount)
+    Should(options.prefix + ': Number of differences between results', diffCount)
       .beLessThanOrEqualTo(thresholdDiffCount);
 }
 
 // Create an impulse in a buffer of length sampleFrameLength
 function createImpulseBuffer(context, sampleFrameLength) {
     var audioBuffer = context.createBuffer(1, sampleFrameLength, context.sampleRate);
     var n = audioBuffer.length;
     var dataL = audioBuffer.getChannelData(0);
 
     for (var k = 0; k < n; ++k) {
@@ skipping 90 matching lines @@
     var length = Math.min(actual.length, expected.length);
 
     for (var k = 0; k < length; ++k) {
         var diff = actual[k] - expected[k];
         signalPower += expected[k] * expected[k];
         noisePower += diff * diff;
     }
 
     return signalPower / noisePower;
 }