Remove default argument from RestoreState() methods.

core/fxge/win32/fx_win32_device.cpp

 // 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.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "core/fxge/include/fx_ge.h"
 
 #if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_DESKTOP_
 #include <crtdbg.h>
@@ skipping 489 matching lines @@
     m_nBitsPerPixel = ::GetDeviceCaps(m_hDC, BITSPIXEL);
     m_Width = ::GetDeviceCaps(m_hDC, HORZRES);
     m_Height = ::GetDeviceCaps(m_hDC, VERTRES);
   }
   if (m_DeviceClass != FXDC_DISPLAY) {
     m_RenderCaps = FXRC_BIT_MASK;
   } else {
     m_RenderCaps = FXRC_GET_BITS | FXRC_BIT_MASK;
   }
 }
+
 int CGdiDeviceDriver::GetDeviceCaps(int caps_id) {
   switch (caps_id) {
     case FXDC_DEVICE_CLASS:
       return m_DeviceClass;
     case FXDC_PIXEL_WIDTH:
       return m_Width;
     case FXDC_PIXEL_HEIGHT:
       return m_Height;
     case FXDC_BITS_PIXEL:
       return m_nBitsPerPixel;
     case FXDC_RENDER_CAPS:
       return m_RenderCaps;
   }
   return 0;
 }
+
+void CGdiDeviceDriver::SaveState() {
+  SaveDC(m_hDC);
+}
+
+void CGdiDeviceDriver::RestoreState(bool bKeepSaved) {
+  RestoreDC(m_hDC, -1);
+  if (bKeepSaved)
+    SaveDC(m_hDC);
+}
+
 void* CGdiDeviceDriver::GetClipRgn() {
   HRGN hClipRgn = CreateRectRgn(0, 0, 1, 1);
   if (::GetClipRgn(m_hDC, hClipRgn) == 0) {
     DeleteObject(hClipRgn);
     hClipRgn = NULL;
   }
   return (void*)hClipRgn;
 }
 FX_BOOL CGdiDeviceDriver::GDI_SetDIBits(const CFX_DIBitmap* pBitmap1,
                                         const FX_RECT* pSrcRect,
@@ skipping 941 matching lines @@
     SelectObject(m_hDC, m_hOldBitmap);
     DeleteDC(m_hDC);
   }
   if (m_hBitmap) {
     DeleteObject(m_hBitmap);
   }
   delete GetBitmap();
 }
 
 #endif  // _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_