Revert "Transition modules/** to use ExceptionState"

Source/modules/webaudio/OfflineAudioContext.h

Index: Source/modules/webaudio/OfflineAudioContext.h
diff --git a/Source/modules/webaudio/OfflineAudioContext.h b/Source/modules/webaudio/OfflineAudioContext.h
index 0743cbdf2c671d9251e567ca69e972f4dab1c569..d8604e15b15237738eaa6bb0d83e824f5bbb0f4b 100644
--- a/Source/modules/webaudio/OfflineAudioContext.h
+++ b/Source/modules/webaudio/OfflineAudioContext.h
@@ -29,11 +29,9 @@
 
 namespace WebCore {
 
-class ExceptionState;
-
 class OfflineAudioContext : public AudioContext {
 public:
-    static PassRefPtr<OfflineAudioContext> create(ScriptExecutionContext*, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&);
+    static PassRefPtr<OfflineAudioContext> create(ScriptExecutionContext*, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionCode&);
 
     virtual ~OfflineAudioContext();