Bug 877820 - Improve the argument checking for OfflineAudioContext's sampleRate argument; r=roc

content/media/test/crashtests/877820.html

@@ -0,0 +1,4 @@
+<script>
+o1 = new window.OfflineAudioContext(2, 5, 0.39);
+window.location.reload();
+</script>

content/media/test/crashtests/crashtests.list

@@ -30,3 +30,4 @@ load 876215.html
 load 876249.html
 load 876252.html
 load 876834.html
+load 877820.html

content/media/webaudio/AudioContext.cpp

@@ -106,7 +106,7 @@ AudioContext::Constructor(const GlobalObject& aGlobal,
   if (aNumberOfChannels == 0 ||
       aNumberOfChannels > WebAudioUtils::MaxChannelCount ||
       aLength == 0 ||
-      aSampleRate <= 0.0f ||
+      aSampleRate <= 1.0f ||
       aSampleRate >= TRACK_RATE_MAX) {
     // The DOM binding protects us against infinity and NaN
     aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);