Revert "Transition modules/** to use ExceptionState"

Source/modules/mediastream/MediaStream.h

Index: Source/modules/mediastream/MediaStream.h
diff --git a/Source/modules/mediastream/MediaStream.h b/Source/modules/mediastream/MediaStream.h
index 1d111a76effb414fae173b7c6bd066ba730d3236..fd83cbbe873a52af50a2fdc6741c98bfa3c96115 100644
--- a/Source/modules/mediastream/MediaStream.h
+++ b/Source/modules/mediastream/MediaStream.h
@@ -38,7 +38,7 @@
 
 namespace WebCore {
 
-class ExceptionState;
+typedef int ExceptionCode;
 
 class MediaStream : public RefCounted<MediaStream>, public ScriptWrappable, public URLRegistrable, public MediaStreamDescriptorClient, public EventTarget, public ContextLifecycleObserver {
 public:
@@ -53,8 +53,8 @@ public:
 
     String id() const { return m_descriptor->id(); }
 
-    void addTrack(PassRefPtr<MediaStreamTrack>, ExceptionState&);
-    void removeTrack(PassRefPtr<MediaStreamTrack>, ExceptionState&);
+    void addTrack(PassRefPtr<MediaStreamTrack>, ExceptionCode&);
+    void removeTrack(PassRefPtr<MediaStreamTrack>, ExceptionCode&);
     MediaStreamTrack* getTrackById(String);
 
     MediaStreamTrackVector getAudioTracks() const { return m_audioTracks; }