WebCrypto: Add ECDSA algorithm (Blink side).

public/platform/WebCryptoAlgorithmParams.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 229 matching lines @@
     }
 
     virtual WebCryptoAlgorithmParamsType type() const { return WebCryptoAlgorithmParamsTypeRsaPssParams; }
 
     unsigned saltLengthBytes() const { return m_saltLengthBytes; }
 
 private:
     const unsigned m_saltLengthBytes;
 };
 
+class WebCryptoEcdsaParams : public WebCryptoAlgorithmParamsWithHash {
+public:
+    explicit WebCryptoEcdsaParams(const WebCryptoAlgorithm& hash)
+        : WebCryptoAlgorithmParamsWithHash(hash)
+    {
+    }
+
+    virtual WebCryptoAlgorithmParamsType type() const { return WebCryptoAlgorithmParamsTypeEcdsaParams; }
+};
+
+class WebCryptoEcKeyGenParams : public WebCryptoAlgorithmParams {
+public:
+    explicit WebCryptoEcKeyGenParams(WebCryptoNamedCurve namedCurve)
+        : m_namedCurve(namedCurve)
+    {
+    }
+
+    virtual WebCryptoAlgorithmParamsType type() const { return WebCryptoAlgorithmParamsTypeEcKeyGenParams; }
+
+    WebCryptoNamedCurve namedCurve() const { return m_namedCurve; }
+
+private:
+    const WebCryptoNamedCurve m_namedCurve;
+};
+
+class WebCryptoEcKeyImportParams : public WebCryptoAlgorithmParams {
+public:
+    explicit WebCryptoEcKeyImportParams(WebCryptoNamedCurve namedCurve)
+        : m_namedCurve(namedCurve)
+    {
+    }
+
+    virtual WebCryptoAlgorithmParamsType type() const { return WebCryptoAlgorithmParamsTypeEcKeyImportParams; }
+
+    WebCryptoNamedCurve namedCurve() const { return m_namedCurve; }
+
+private:
+    const WebCryptoNamedCurve m_namedCurve;
+};
+
 } // namespace blink
 
 #endif