WebCrypto: Update the key usage names to reflect recent changes to the spec.

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 29 matching lines @@
     WebCryptoKeyTypeSecret,
     WebCryptoKeyTypePublic,
     WebCryptoKeyTypePrivate,
 };
 
 enum WebCryptoKeyUsage {
     WebCryptoKeyUsageEncrypt = 1 << 0,
     WebCryptoKeyUsageDecrypt = 1 << 1,
     WebCryptoKeyUsageSign = 1 << 2,
     WebCryptoKeyUsageVerify = 1 << 3,
-    WebCryptoKeyUsageDerive = 1 << 4,
-    WebCryptoKeyUsageWrap = 1 << 5,
-    WebCryptoKeyUsageUnwrap = 1 << 6,
+    WebCryptoKeyUsageDeriveKey = 1 << 4,
+    WebCryptoKeyUsageWrapKey = 1 << 5,
+    WebCryptoKeyUsageUnwrapKey = 1 << 6,
 #if WEBKIT_IMPLEMENTATION
     EndOfWebCryptoKeyUsage,
 #endif
 };
 
 // A bitfield of WebCryptoKeyUsage
 typedef int WebCryptoKeyUsageMask;
 
 class WebCryptoAlgorithm;
 class WebCryptoKeyPrivate;
@@ skipping 36 matching lines @@
     WEBKIT_EXPORT static WebCryptoKey create(WebCryptoKeyHandle*, WebCryptoKeyType, bool extractable, const WebCryptoAlgorithm&, WebCryptoKeyUsageMask);
 
     // 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|
     WEBKIT_EXPORT WebCryptoKeyHandle* handle() const;
 
     WEBKIT_EXPORT WebCryptoKeyType type() const;
     WEBKIT_EXPORT bool extractable() const;
     WEBKIT_EXPORT const WebCryptoAlgorithm& algorithm() const;
-    WEBKIT_EXPORT WebCryptoKeyUsageMask keyUsage() const;
+    WEBKIT_EXPORT WebCryptoKeyUsageMask usages() const;
 
 private:
     WebCryptoKey() { }
     WEBKIT_EXPORT void assign(const WebCryptoKey& other);
     WEBKIT_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 WebKit
 
 #endif