Revert of Allow status = 0 when XHR is completed in Audit.loadFileFromUrl().

third_party/WebKit/LayoutTests/webaudio/resources/oscillator-testing.js

Index: third_party/WebKit/LayoutTests/webaudio/resources/oscillator-testing.js
diff --git a/third_party/WebKit/LayoutTests/webaudio/resources/oscillator-testing.js b/third_party/WebKit/LayoutTests/webaudio/resources/oscillator-testing.js
index f2d8f9c0877b0d308fef596337c75589f29d7892..84543864681f079b5159231e48f68031c75d65d9 100644
--- a/third_party/WebKit/LayoutTests/webaudio/resources/oscillator-testing.js
+++ b/third_party/WebKit/LayoutTests/webaudio/resources/oscillator-testing.js
@@ -42,6 +42,10 @@
 
 // Max diff must be less than this to pass the test.
 var thresholdDiff = 0;
+
+// Count the number of differences between the expected and actual result. The tests passes
+// if the count is less than this threshold.
+var thresholdDiffCount = 0;
 
 // Mostly for debugging
 
@@ -119,6 +123,11 @@
             maxError = Math.abs(diff);
             errorPosition = k;
         }
+        // The reference file is a 16-bit WAV file, so we will almost never get an exact match
+        // between it and the actual floating-point result.
+        if (diff > 0) {
+            diffCount++;
+        }
     }
 
     var snr = calculateSNR(signalPower, noisePower);
@@ -126,6 +135,11 @@
         .beGreaterThanOrEqualTo(thresholdSNR);
     should(maxError, "Maximum difference")
         .beLessThanOrEqualTo(thresholdDiff);
+
+    should(diffCount,
+           "Number of differences between actual and expected result out of "
+           + renderedData.length + " frames")
+        .beLessThanOrEqualTo(thresholdDiffCount);
 
     var filename = "oscillator-" + oscType + "-actual.wav";
     if (downloadAudioBuffer(renderedBuffer, filename, true))
@@ -147,6 +161,7 @@
     lengthInSeconds: lengthInSeconds,
     thresholdSNR: thresholdSNR,
     thresholdDiff: thresholdDiff,
+    thresholdDiffCount: thresholdDiffCount,
     waveScaleFactor: waveScaleFactor,
     setThresholds: setThresholds,
     runTest: runTest,