Added more XML documentation.

source/uCEFPreferenceRegistrar.pas

@@ -15,8 +15,25 @@ uses
   uCEFBaseScopedWrapper, uCEFTypes, uCEFInterfaces;
 
 type
+  /// <summary>
+  /// Class that manages custom preference registrations.
+  /// </summary>
+  /// <remarks>
+  /// <para><see href="https://bitbucket.org/chromiumembedded/cef/src/master/include/capi/cef_preference_capi.h">CEF source file: /include/capi/cef_preference_capi.h (cef_preference_registrar_t)</see></para>
+  /// </remarks>
   TCefPreferenceRegistrarRef = class(TCEFBaseScopedWrapperRef)
     public
+      /// <summary>
+      /// Register a preference with the specified |name| and |default_value|. To
+      /// avoid conflicts with built-in preferences the |name| value should contain
+      /// an application-specific prefix followed by a period (e.g. "myapp.value").
+      /// The contents of |default_value| will be copied. The data type for the
+      /// preference will be inferred from |default_value|'s type and cannot be
+      /// changed after registration. Returns true (1) on success. Returns false (0)
+      /// if |name| is already registered or if |default_value| has an invalid type.
+      /// This function must be called from within the scope of the
+      /// ICefBrowserProcessHandler.OnRegisterCustomPreferences callback.
+      /// </summary>
       function AddPreference(const name: ustring; const default_value: ICefValue): Boolean;
   end;