[webcrypto] Don't throw any extra WebIDL exceptions from WebCrypto methods.

Source/modules/crypto/SubtleCrypto.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 23 matching lines @@
 #include "bindings/v8/ScriptPromise.h"
 #include "bindings/v8/ScriptWrappable.h"
 #include "heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class Dictionary;
-class ExceptionState;
 class Key;
 
 class SubtleCrypto : public RefCountedWillBeGarbageCollectedFinalized<SubtleCrypto>,  public ScriptWrappable {
 public:
     static PassRefPtrWillBeRawPtr<SubtleCrypto> create()
     {
         return adoptRefWillBeNoop(new SubtleCrypto());
     }
 
-    ScriptPromise encrypt(const Dictionary&, Key*, ArrayBufferView* data, ExceptionState&);
-    ScriptPromise decrypt(const Dictionary&, Key*, ArrayBufferView* data, ExceptionState&);
-    ScriptPromise sign(const Dictionary&, Key*, ArrayBufferView* data, ExceptionState&);
+    ScriptPromise encrypt(const Dictionary&, Key*, ArrayBufferView* data);
+    ScriptPromise decrypt(const Dictionary&, Key*, ArrayBufferView* data);
+    ScriptPromise sign(const Dictionary&, Key*, ArrayBufferView* data);
     // Note that this is not named "verify" because when compiling on Mac that expands to a macro and breaks.
-    ScriptPromise verifySignature(const Dictionary&, Key*, ArrayBufferView* signature, ArrayBufferView* data, ExceptionState&);
-    ScriptPromise digest(const Dictionary&, ArrayBufferView* data, ExceptionState&);
+    ScriptPromise verifySignature(const Dictionary&, Key*, ArrayBufferView* signature, ArrayBufferView* data);
+    ScriptPromise digest(const Dictionary&, ArrayBufferView* data);
 
-    ScriptPromise generateKey(const Dictionary&, bool extractable, const Vector<String>& keyUsages, ExceptionState&);
-    ScriptPromise importKey(const String&, ArrayBufferView*, const Dictionary&, bool extractable, const Vector<String>& keyUsages, ExceptionState&);
-    ScriptPromise exportKey(const String&, Key*, ExceptionState&);
+    ScriptPromise generateKey(const Dictionary&, bool extractable, const Vector<String>& keyUsages);
+    ScriptPromise importKey(const String&, ArrayBufferView*, const Dictionary&, bool extractable, const Vector<String>& keyUsages);
+    ScriptPromise exportKey(const String&, Key*);
 
-    ScriptPromise wrapKey(const String&, Key*, Key*, const Dictionary&, ExceptionState&);
-    ScriptPromise unwrapKey(const String&, ArrayBufferView*, Key*, const Dictionary&, const Dictionary&, bool, const Vector<String>&, ExceptionState&);
+    ScriptPromise wrapKey(const String&, Key*, Key*, const Dictionary&);
+    ScriptPromise unwrapKey(const String&, ArrayBufferView*, Key*, const Dictionary&, const Dictionary&, bool, const Vector<String>&);
 
     void trace(Visitor*) { }
 
 private:
     SubtleCrypto();
 };
 
 } // namespace WebCore
 
 #endif