[webcrypto] Add the KeyAlgorithm interface.

public/platform/WebCryptoKey.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 47 matching lines @@
 // A bitfield of WebCryptoKeyUsage
 typedef int WebCryptoKeyUsageMask;
 
 enum WebCryptoKeyFormat {
     WebCryptoKeyFormatRaw,
     WebCryptoKeyFormatPkcs8,
     WebCryptoKeyFormatSpki,
     WebCryptoKeyFormatJwk,
 };
 
-class WebCryptoAlgorithm;
+class WebCryptoKeyAlgorithm;
 class WebCryptoKeyPrivate;
 class WebCryptoKeyHandle;
 
 // The WebCryptoKey represents a key from the Web Crypto API:
 //
 // https://dvcs.w3.org/hg/webcrypto-api/raw-file/tip/spec/Overview.html#key-interface
 //
 // WebCryptoKey is just a reference-counted wrapper that manages the lifetime of
 // a "WebCryptoKeyHandle*".
 //
@@ skipping 20 matching lines @@
     WebCryptoKey& operator=(const WebCryptoKey& other)
     {
         assign(other);
         return *this;
     }
 
     // For an explanation of these parameters see:
     // https://dvcs.w3.org/hg/webcrypto-api/raw-file/tip/spec/Overview.html#key-interface-members
     //
     // Note that the caller is passing ownership of the WebCryptoKeyHandle*.
-    BLINK_PLATFORM_EXPORT static WebCryptoKey create(WebCryptoKeyHandle*, WebCryptoKeyType, bool extractable, const WebCryptoAlgorithm&, WebCryptoKeyUsageMask);
+    BLINK_PLATFORM_EXPORT static WebCryptoKey create(WebCryptoKeyHandle*, WebCryptoKeyType, bool extractable, const WebCryptoKeyAlgorithm&, WebCryptoKeyUsageMask);
 
     BLINK_PLATFORM_EXPORT static WebCryptoKey createNull();
 
     // Returns the opaque key handle that was set by the embedder.
     //   * Safe to downcast to known type (since embedder creates all the keys)
     //   * Returned pointer's lifetime is bound to |this|
     BLINK_PLATFORM_EXPORT WebCryptoKeyHandle* handle() const;
 
     BLINK_PLATFORM_EXPORT WebCryptoKeyType type() const;
     BLINK_PLATFORM_EXPORT bool extractable() const;
-    BLINK_PLATFORM_EXPORT const WebCryptoAlgorithm& algorithm() const;
+    BLINK_PLATFORM_EXPORT const WebCryptoKeyAlgorithm& algorithm() const;
     BLINK_PLATFORM_EXPORT WebCryptoKeyUsageMask usages() const;
 
     BLINK_PLATFORM_EXPORT bool isNull() const;
 
 private:
     WebCryptoKey() { }
     BLINK_PLATFORM_EXPORT void assign(const WebCryptoKey& other);
     BLINK_PLATFORM_EXPORT void reset();
 
     WebPrivatePtr<WebCryptoKeyPrivate> m_private;
 };
 
 // Base class for the embedder to define its own opaque key handle. The lifetime
 // of this object is controlled by WebCryptoKey using reference counting.
 class WebCryptoKeyHandle {
 public:
     virtual ~WebCryptoKeyHandle() { }
 };
 
 } // namespace blink
 
 #endif