WebCrypto: Add crypto.subtle.verify() to the platform interfaces.

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 34 matching lines @@
 class Key;
 
 class SubtleCrypto : public ScriptWrappable, public RefCounted<SubtleCrypto> {
 public:
     static PassRefPtr<SubtleCrypto> create() { return adoptRef(new SubtleCrypto()); }
 
     PassRefPtr<CryptoOperation> encrypt(const Dictionary&, Key*, ExceptionState&);
     PassRefPtr<CryptoOperation> decrypt(const Dictionary&, Key*, ExceptionState&);
     PassRefPtr<CryptoOperation> sign(const Dictionary&, Key*, ExceptionState&);
     // Note that this is not named "verify" because when compiling on Mac that expands to a macro and breaks.
-    PassRefPtr<CryptoOperation> verifySignature(const Dictionary&, Key*, ExceptionState&);
+    PassRefPtr<CryptoOperation> verifySignature(const Dictionary&, Key*, ArrayBufferView* signature, ExceptionState&);
     PassRefPtr<CryptoOperation> digest(const Dictionary&, ExceptionState&);
 
     ScriptObject importKey(const String&, ArrayBufferView*, const Dictionary&, bool extractable, const Vector<String>& keyUsages, ExceptionState&);
 
 private:
     SubtleCrypto();
 };
 
 } // namespace WebCore
 
 #endif