Rebase oscillator sine test result.

LayoutTests/webaudio/oscillator-square.html

Index: LayoutTests/webaudio/oscillator-square.html
diff --git a/LayoutTests/webaudio/oscillator-square.html b/LayoutTests/webaudio/oscillator-square.html
index 52b74afa69a2ebfd0a0931b23eb3afeb35491b80..bbbd4f014a4d69a2d93a8de6ea40e11792b001e0 100644
--- a/LayoutTests/webaudio/oscillator-square.html
+++ b/LayoutTests/webaudio/oscillator-square.html
@@ -21,7 +21,14 @@ function init() {
     if (!window.testRunner)
         return;
 
-    generateExponentialOscillatorSweep("square");
+    // Create offline audio context.
+    context = new OfflineAudioContext(1, sampleRate * lengthInSeconds, sampleRate);
+    generateExponentialOscillatorSweep(context, "square");
+
+    context.oncomplete = finishAudioTest;
+    context.startRendering();    
+
+    testRunner.waitUntilDone();
 }
 
 </script>