Remove default argument from RestoreState() methods.

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 12 matching lines @@
                        FX_BOOL bGroupKnockout);
   CFX_SkiaDeviceDriver(SkPictureRecorder* recorder);
   CFX_SkiaDeviceDriver(int size_x, int size_y);
   ~CFX_SkiaDeviceDriver() override;
 
   /** Options */
   int GetDeviceCaps(int caps_id) override;
 
   /** Save and restore all graphic states */
   void SaveState() override;
-  void RestoreState(FX_BOOL bKeepSaved) override;
+  void RestoreState(bool bKeepSaved) override;
 
   /** Set clipping path using filled region */
   FX_BOOL SetClip_PathFill(
       const CFX_PathData* pPathData,     // path info
       const CFX_Matrix* pObject2Device,  // optional transformation
       int fill_mode) override;           // fill mode, WINDING or ALTERNATE
 
   /** Set clipping path using stroked region */
   FX_BOOL SetClip_PathStroke(
       const CFX_PathData* pPathData,     // path info
@@ skipping 101 matching lines @@
   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_