Expose DisplayListCanvas.drawGLFunctor to webview

  public final class WebViewDelegate {

    method public void addWebViewAssetPath(android.content.Context);

    method public void callDrawGlFunction(android.graphics.Canvas, long);

    method public void callDrawGlFunction(android.graphics.Canvas, long, java.lang.Runnable);

    method public boolean canInvokeDrawGlFunctor(android.view.View);

    method public void detachDrawGlFunctor(android.view.View, long);

    method public android.app.Application getApplication();

            throw new IllegalArgumentException(canvas.getClass().getName()

                    + " is not a DisplayList canvas");

        }

        ((DisplayListCanvas) canvas).callDrawGLFunction2(nativeDrawGLFunctor);

        ((DisplayListCanvas) canvas).drawGLFunctor2(nativeDrawGLFunctor, null);

    }

    /**

     * Calls the function specified with the nativeDrawGLFunctor functor pointer. This

     * functionality is used by the WebView for calling into their renderer from the

     * framework display lists.

     *

     * @param canvas a hardware accelerated canvas (see {@link Canvas#isHardwareAccelerated()})

     * @param nativeDrawGLFunctor the pointer to the native functor that implements

     *        system/core/include/utils/Functor.h

     * @param releasedRunnable Called when this nativeDrawGLFunctor is no longer referenced by this

     *        canvas, so is safe to be destroyed.

     * @throws IllegalArgumentException if the canvas is not hardware accelerated

     */

    public void callDrawGlFunction(@NonNull Canvas canvas, long nativeDrawGLFunctor,

            @Nullable Runnable releasedRunnable) {

        if (!(canvas instanceof DisplayListCanvas)) {

            // Canvas#isHardwareAccelerated() is only true for subclasses of HardwareCanvas.

            throw new IllegalArgumentException(canvas.getClass().getName()

                    + " is not a DisplayList canvas");

        }

        ((DisplayListCanvas) canvas).drawGLFunctor2(nativeDrawGLFunctor, releasedRunnable);

    }

    /**