Remove the WebCrypto::digestSynchronous() method

public/platform/WebCrypto.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 181 matching lines @@
     virtual void verifySignature(const WebCryptoAlgorithm&, const WebCryptoKey&, const unsigned char* signature, unsigned signatureSize, const unsigned char* data, unsigned dataSize, WebCryptoResult result) { result.completeWithError(); }
     virtual void digest(const WebCryptoAlgorithm&, const unsigned char* data, unsigned dataSize, WebCryptoResult result) { result.completeWithError(); }
     virtual void generateKey(const WebCryptoAlgorithm&, bool extractable, WebCryptoKeyUsageMask, WebCryptoResult result) { result.completeWithError(); }
     virtual void importKey(WebCryptoKeyFormat, const unsigned char* keyData, unsigned keyDataSize, const WebCryptoAlgorithm&, bool extractable, WebCryptoKeyUsageMask, WebCryptoResult result) { result.completeWithError(); }
     virtual void exportKey(WebCryptoKeyFormat, const WebCryptoKey&, WebCryptoResult result) { result.completeWithError(); }
     virtual void wrapKey(WebCryptoKeyFormat, const WebCryptoKey& key, const WebCryptoKey& wrappingKey, const WebCryptoAlgorithm&, WebCryptoResult result) { result.completeWithError(); }
     virtual void unwrapKey(WebCryptoKeyFormat, const unsigned char* wrappedKey, unsigned wrappedKeySize, const WebCryptoKey&, const WebCryptoAlgorithm& unwrapAlgorithm, const WebCryptoAlgorithm& unwrappedKeyAlgorithm, bool extractable, WebCryptoKeyUsageMask, WebCryptoResult result) { result.completeWithError(); }
 
     // This is the exception to the "Completing the request" guarantees
     // outlined above. This is useful for Blink internal crypto and is not part
-    // of the WebCrypto standard. digestSynchronous returns |true| if the
-    // digest was successfully computed and put into result. Otherwise, returns
-    // |false|. It must compute the digest or fail synchronously.
-    // createDigestor must provide the result via the WebCryptoDigestor object
-    // synchronously. createDigestor may return 0 if it fails to create a
-    // WebCryptoDigestor. If it succeeds, the WebCryptoDigestor returned by
-    // createDigestor must be freed by the caller.
-    virtual bool digestSynchronous(const WebCryptoAlgorithmId algorithmId, const unsigned char* data, unsigned dataSize, WebArrayBuffer& result) { return false; }
+    // of the WebCrypto standard. createDigestor must provide the result via
+    // the WebCryptoDigestor object synchronously. createDigestor may return 0
+    // if it fails to create a WebCryptoDigestor. If it succeeds, the
+    // WebCryptoDigestor returned by createDigestor must be freed by the
+    // caller.
     virtual WebCryptoDigestor* createDigestor(WebCryptoAlgorithmId algorithmId) { return 0; }
 
     // -----------------------
     // Structured clone
     // -----------------------
     //
     // deserializeKeyForClone() and serializeKeyForClone() are used for
     // implementing structured cloning of WebCryptoKey.
     //
     // Blink is responsible for saving and restoring all of the attributes of
@@ skipping 37 matching lines @@
     // Returns true on success.
     virtual bool serializeKeyForClone(const WebCryptoKey&, WebVector<unsigned char>&) { return false; }
 
 protected:
     virtual ~WebCrypto() { }
 };
 
 } // namespace blink
 
 #endif