Support multiple HRTFDatabases for different sample-rates

Source/modules/webaudio/OfflineAudioContext.cpp

Index: Source/modules/webaudio/OfflineAudioContext.cpp
diff --git a/Source/modules/webaudio/OfflineAudioContext.cpp b/Source/modules/webaudio/OfflineAudioContext.cpp
index fb4cd1ae4ff1a64ae936bc2bef5c56f8bc644dc9..87f47d3aff0966b0bc430ef981716e2f1879057a 100644
--- a/Source/modules/webaudio/OfflineAudioContext.cpp
+++ b/Source/modules/webaudio/OfflineAudioContext.cpp
@@ -31,7 +31,6 @@
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ScriptExecutionContext.h"
-#include "core/platform/audio/HRTFDatabaseLoader.h"
 
 namespace WebCore {
 
@@ -45,10 +44,7 @@ PassRefPtr<OfflineAudioContext> OfflineAudioContext::create(ScriptExecutionConte
 
     Document* document = toDocument(context);
 
-    // FIXME: offline contexts have limitations on supported sample-rates.
-    // Currently all AudioContexts must have the same sample-rate.
-    HRTFDatabaseLoader* loader = HRTFDatabaseLoader::loader();
-    if (numberOfChannels > 10 || !isSampleRateRangeGood(sampleRate) || (loader && loader->databaseSampleRate() != sampleRate)) {
+    if (numberOfChannels > 10 || !isSampleRateRangeGood(sampleRate)) {
         ec = SYNTAX_ERR;
         return 0;
     }