[webcrypto] Add length parameter to HmacKeyAlgorithm. (blink)

public/platform/WebCryptoKeyAlgorithmParams.h

 /*
  * Copyright (C) 2014 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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebCryptoKeyAlgorithmParams_h
 #define WebCryptoKeyAlgorithmParams_h
 
 #include "WebCommon.h"
 #include "WebCryptoAlgorithm.h"
 #include "WebVector.h"
 
+// FIXME: Delete this once the chromium side has picked up the API change.
+#define WEBCRYPTO_HMAC_KEY_HAS_LENGTH 1
+
 namespace blink {
 
 enum WebCryptoKeyAlgorithmParamsType {
     WebCryptoKeyAlgorithmParamsTypeNone,
     WebCryptoKeyAlgorithmParamsTypeHmac,
     WebCryptoKeyAlgorithmParamsTypeAes,
     WebCryptoKeyAlgorithmParamsTypeRsa,
     WebCryptoKeyAlgorithmParamsTypeRsaHashed
 };
 
@@ skipping 22 matching lines @@
     {
         return WebCryptoKeyAlgorithmParamsTypeAes;
     }
 
 private:
     unsigned short m_lengthBits;
 };
 
 class WebCryptoHmacKeyAlgorithmParams : public WebCryptoKeyAlgorithmParams {
 public:
-    explicit WebCryptoHmacKeyAlgorithmParams(const WebCryptoAlgorithm& hash)
+    WebCryptoHmacKeyAlgorithmParams(const WebCryptoAlgorithm& hash, unsigned lengthBits)
         : m_hash(hash)
+        , m_lengthBits(lengthBits)
     {
     }
 
     const WebCryptoAlgorithm& hash() const
     {
         return m_hash;
     }
 
+    unsigned lengthBits() const
+    {
+        return m_lengthBits;
+    }
+
     virtual WebCryptoKeyAlgorithmParamsType type() const
     {
         return WebCryptoKeyAlgorithmParamsTypeHmac;
     }
 
 private:
     WebCryptoAlgorithm m_hash;
+    unsigned m_lengthBits;
 };
 
 class WebCryptoRsaKeyAlgorithmParams : public WebCryptoKeyAlgorithmParams {
 public:
     WebCryptoRsaKeyAlgorithmParams(unsigned modulusLengthBits, const unsigned char* publicExponent, unsigned publicExponentSize)
         : m_modulusLengthBits(modulusLengthBits)
         , m_publicExponent(publicExponent, publicExponentSize)
     {
     }
 
@@ skipping 35 matching lines @@
         return WebCryptoKeyAlgorithmParamsTypeRsaHashed;
     }
 
 private:
     WebCryptoAlgorithm m_hash;
 };
 
 } // namespace blink
 
 #endif