remove agg from skia driver

core/fxge/skia/fx_skia_device.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CORE_FXGE_SKIA_FX_SKIA_DEVICE_H_
 #define CORE_FXGE_SKIA_FX_SKIA_DEVICE_H_
 
 #if defined(_SKIA_SUPPORT_)
 
 class SkCanvas;
@@ skipping 66 matching lines @@
 
   FX_BOOL GetClipBox(FX_RECT* pRect) override;
 
   /** Load device buffer into a DIB */
   FX_BOOL GetDIBits(CFX_DIBitmap* pBitmap,
                     int left,
                     int top,
                     void* pIccTransform = NULL,
                     FX_BOOL bDEdge = FALSE) override;
 
-  CFX_DIBitmap* GetBackDrop() override { return m_pAggDriver->GetBackDrop(); }
+  CFX_DIBitmap* GetBackDrop() override { return m_pOriDevice; }
 
   FX_BOOL SetDIBits(const CFX_DIBSource* pBitmap,
                     uint32_t color,
                     const FX_RECT* pSrcRect,
                     int dest_left,
                     int dest_top,
                     int blend_type,
                     int alpha_flag = 0,
                     void* pIccTransform = NULL) override;
   FX_BOOL StretchDIBits(const CFX_DIBSource* pBitmap,
@@ skipping 28 matching lines @@
                          FX_FLOAT font_size,
                          uint32_t color,
                          int alpha_flag = 0,
                          void* pIccTransform = NULL) override;
 
   FX_BOOL DrawShading(CPDF_ShadingPattern* pPattern,
                       CFX_Matrix* pMatrix,
                       int alpha,
                       FX_BOOL bAlphaMode) override;
 
-  virtual uint8_t* GetBuffer() const { return m_pAggDriver->GetBuffer(); }
+  virtual uint8_t* GetBuffer() const { return m_pBitmap->GetBuffer(); }
   void PaintStroke(SkPaint* spaint,
                    const CFX_GraphStateData* pGraphState,
                    const SkMatrix& matrix);
   SkPictureRecorder* GetRecorder() const { return m_pRecorder; }
 
  private:
-  CFX_AggDeviceDriver* m_pAggDriver;
+  CFX_DIBitmap* m_pBitmap;
+  CFX_DIBitmap* m_pOriDevice;
   SkCanvas* m_pCanvas;
   SkPictureRecorder* const m_pRecorder;
   int m_ditherBits;
+  FX_BOOL m_bRgbByteOrder;
+  FX_BOOL m_bGroupKnockout;
 };
 #endif  // defined(_SKIA_SUPPORT_)
 
 #endif  // CORE_FXGE_SKIA_FX_SKIA_DEVICE_H_