/// Register a new V8 extension with the specified JavaScript extension code and
/// handler. Functions implemented by the handler are prototyped using the
/// keyword 'native'. The calling of a native function is restricted to the
/// scope in which the prototype of the native function is defined. This
/// function may only be called on the render process main thread.
///
/// Example JavaScript extension code:
/// // create the 'example' global object if it doesn't already exist.
/// if (!example)
/// example = {};
/// // create the 'example.test' global object if it doesn't already exist.
/// if (!example.test)
/// example.test = {};
/// (function() {
/// // Define the function 'example.test.myfunction'.
/// example.test.myfunction = function() {
/// // Call CefV8Handler::Execute() with the function name 'MyFunction'
/// // and no arguments.
/// native function MyFunction();
/// return MyFunction();
/// };
/// // Define the getter function for parameter 'example.test.myparam'.
/// example.test.__defineGetter__('myparam', function() {
/// // Call CefV8Handler::Execute() with the function name 'GetMyParam'
/// // and no arguments.
/// native function GetMyParam();
/// return GetMyParam();
/// });
/// // Define the setter function for parameter 'example.test.myparam'.
/// example.test.__defineSetter__('myparam', function(b) {
/// // Call CefV8Handler::Execute() with the function name 'SetMyParam'
/// // and a single argument.
/// native function SetMyParam();
/// if(b) SetMyParam(b);
/// });
///
/// // Extension definitions can also contain normal JavaScript variables
/// // and functions.
/// var myint = 0;
/// example.test.increment = function() {
/// myint += 1;
/// return myint;
/// };
/// })();
///
///
/// Example usage in the page:
/// // Call the function.
/// example.test.myfunction();
/// // Set the parameter.
/// example.test.myparam = value;
/// // Get the parameter.
/// value = example.test.myparam;
/// // Call another function.
/// example.test.increment();
///
///
function CefRegisterExtension(const name, code: ustring; const Handler: ICefv8Handler): Boolean;
///