rAc: make requestAutocomplete() return a promise.

Source/core/dom/AutocompleteError.h

Index: Source/core/dom/AutocompleteError.h
diff --git a/Source/modules/crypto/AesKeyAlgorithm.h b/Source/core/dom/AutocompleteError.h
similarity index 78%
copy from Source/modules/crypto/AesKeyAlgorithm.h
copy to Source/core/dom/AutocompleteError.h
index f3d91ef6f3f157a27c17678c7c0168ad46673536..00c46047afc62a535811bc9060e399c32608d920 100644
--- a/Source/modules/crypto/AesKeyAlgorithm.h
+++ b/Source/core/dom/AutocompleteError.h
@@ -28,32 +28,30 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef AesKeyAlgorithm_h
-#define AesKeyAlgorithm_h
+#ifndef AutocompleteError_h
+#define AutocompleteError_h
 
-#include "bindings/v8/ScriptWrappable.h"
+#include "core/dom/DOMException.h"
 #include "heap/Handle.h"
-#include "modules/crypto/KeyAlgorithm.h"
-#include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
-class AesKeyAlgorithm : public KeyAlgorithm {
+class AutocompleteError : public DOMException {
 public:
-    static AesKeyAlgorithm* create(const blink::WebCryptoKeyAlgorithm&);
+    static PassRefPtrWillBeRawPtr<AutocompleteError> create(const String& reason)
+    {
+        return adoptRefWillBeNoop(new AutocompleteError(reason));
+    }
 
-    unsigned short length();
-
-    virtual void trace(Visitor*) OVERRIDE;
+    const String& reason() const { return m_reason; }
 
 private:
-    explicit AesKeyAlgorithm(const blink::WebCryptoKeyAlgorithm&);
+    explicit AutocompleteError(const String& reason);
+    const String m_reason;
 };
 
-DEFINE_KEY_ALGORITHM_TYPE_CASTS(AesKeyAlgorithm);
-
 } // namespace WebCore
 
-#endif
+#endif // AutocompleteError_h