Remove default arguments from CFX_FxgeDevice.

core/fxge/agg/fx_agg_driver.cpp

Index: core/fxge/agg/fx_agg_driver.cpp
diff --git a/core/fxge/agg/fx_agg_driver.cpp b/core/fxge/agg/fx_agg_driver.cpp
index 86326f6caf738c5666250b24fb8eb79703e631ef..d7a9ddb530f59b423d7a5958705934566fa48df2 100644
--- a/core/fxge/agg/fx_agg_driver.cpp
+++ b/core/fxge/agg/fx_agg_driver.cpp
@@ -189,17 +189,15 @@ IFX_RenderDeviceDriver* IFX_RenderDeviceDriver::CreateFxgeDriver(
     FX_BOOL bRgbByteOrder,
     CFX_DIBitmap* pOriDevice,
     FX_BOOL bGroupKnockout) {
-  return new CFX_AggDeviceDriver(pBitmap, 0, bRgbByteOrder, pOriDevice,
+  return new CFX_AggDeviceDriver(pBitmap, bRgbByteOrder, pOriDevice,
                                  bGroupKnockout);
 }
 
 CFX_AggDeviceDriver::CFX_AggDeviceDriver(CFX_DIBitmap* pBitmap,
-                                         int dither_bits,
                                          FX_BOOL bRgbByteOrder,
                                          CFX_DIBitmap* pOriDevice,
                                          FX_BOOL bGroupKnockout) {
   m_pBitmap = pBitmap;
-  m_DitherBits = dither_bits;
   m_pClipRgn = nullptr;
   m_pPlatformBitmap = nullptr;
   m_pPlatformGraphics = nullptr;
@@ -270,8 +268,6 @@ int CFX_AggDeviceDriver::GetDeviceCaps(int caps_id) {
       }
       return flags;
     }
-    case FXDC_DITHER_BITS:
-      return m_DitherBits;
   }
   return 0;
 }
@@ -1784,16 +1780,15 @@ CFX_FxgeDevice::CFX_FxgeDevice() {
 }
 
 bool CFX_FxgeDevice::Attach(CFX_DIBitmap* pBitmap,
-                            int dither_bits,
                             bool bRgbByteOrder,
                             CFX_DIBitmap* pOriDevice,
                             bool bGroupKnockout) {
-  if (!pBitmap) {
+  if (!pBitmap)
     return false;
-  }
+
   SetBitmap(pBitmap);
   IFX_RenderDeviceDriver* pDriver = new CFX_AggDeviceDriver(
-      pBitmap, dither_bits, bRgbByteOrder, pOriDevice, bGroupKnockout);
+      pBitmap, bRgbByteOrder, pOriDevice, bGroupKnockout);
   SetDeviceDriver(pDriver);
   return true;
 }
@@ -1801,7 +1796,6 @@ bool CFX_FxgeDevice::Attach(CFX_DIBitmap* pBitmap,
 bool CFX_FxgeDevice::Create(int width,
                             int height,
                             FXDIB_Format format,
-                            int dither_bits,
                             CFX_DIBitmap* pOriDevice) {
   m_bOwnedBitmap = true;
   CFX_DIBitmap* pBitmap = new CFX_DIBitmap;
@@ -1811,7 +1805,7 @@ bool CFX_FxgeDevice::Create(int width,
   }
   SetBitmap(pBitmap);
   IFX_RenderDeviceDriver* pDriver =
-      new CFX_AggDeviceDriver(pBitmap, dither_bits, FALSE, pOriDevice, FALSE);
+      new CFX_AggDeviceDriver(pBitmap, FALSE, pOriDevice, FALSE);
   SetDeviceDriver(pDriver);
   return true;
 }