Disable the window mode options for always full-screen renderers

app/streaming/video/decoder.h

@@ -43,6 +43,7 @@ public:
     virtual ~IVideoDecoder() {}
     virtual bool initialize(PDECODER_PARAMETERS params) = 0;
     virtual bool isHardwareAccelerated() = 0;
+    virtual bool isAlwaysFullScreen() = 0;
     virtual int getDecoderCapabilities() = 0;
     virtual int getDecoderColorspace() = 0;
     virtual int submitDecodeUnit(PDECODE_UNIT du) = 0;