Updating the sample plugin with performance optimizations and better audio support.
diff --git a/samples/BrowserPlugin/jni/background/BackgroundPlugin.h b/samples/BrowserPlugin/jni/background/BackgroundPlugin.h
index 4e74fce..a465f41 100644
--- a/samples/BrowserPlugin/jni/background/BackgroundPlugin.h
+++ b/samples/BrowserPlugin/jni/background/BackgroundPlugin.h
@@ -28,14 +28,11 @@
 #ifndef backgroundPlugin__DEFINED
 #define backgroundPlugin__DEFINED
 
-struct ANPCanvas;
-struct ANPEvent;
-struct ANPPaint;
-
 class BackgroundPlugin : public SubPlugin {
 public:
     BackgroundPlugin(NPP inst);
     virtual ~BackgroundPlugin();
+    virtual bool supportsDrawingModel(ANPDrawingModel);
     virtual void draw(ANPCanvas*);
     virtual int16 handleEvent(const ANPEvent* evt);