Remove default arguments from CFX_FxgeDevice.

core/fxge/agg/fx_agg_driver.h

Index: core/fxge/agg/fx_agg_driver.h
diff --git a/core/fxge/agg/fx_agg_driver.h b/core/fxge/agg/fx_agg_driver.h
index a33bc0993766ecc55f5838620dd225c9f20489b8..3462b61bb2371057a419197d143492135515d31b 100644
--- a/core/fxge/agg/fx_agg_driver.h
+++ b/core/fxge/agg/fx_agg_driver.h
@@ -28,7 +28,6 @@ class CAgg_PathData {
 class CFX_AggDeviceDriver : public IFX_RenderDeviceDriver {
  public:
   CFX_AggDeviceDriver(CFX_DIBitmap* pBitmap,
-                      int dither_bits,
                       FX_BOOL bRgbByteOrder,
                       CFX_DIBitmap* pOriDevice,
                       FX_BOOL bGroupKnockout);
@@ -144,7 +143,6 @@ class CFX_AggDeviceDriver : public IFX_RenderDeviceDriver {
   void* m_pPlatformBitmap;
   void* m_pDwRenderTartget;
   int m_FillFlags;
-  int m_DitherBits;
   FX_BOOL m_bRgbByteOrder;
   CFX_DIBitmap* m_pOriDevice;
   FX_BOOL m_bGroupKnockout;