Cleanup unused methods and return values in FWL code.

xfa/fxgraphics/cfx_graphics.h

 // Copyright 2016 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
 
 #ifndef XFA_FXGRAPHICS_CFX_GRAPHICS_H_
 #define XFA_FXGRAPHICS_CFX_GRAPHICS_H_
 
 #include <memory>
@@ skipping 147 matching lines @@
                       const CFX_PointF& point,
                       CFX_Matrix* matrix = nullptr);
   FWL_Error StretchImage(CFX_DIBSource* source,
                          const CFX_RectF& rect,
                          CFX_Matrix* matrix = nullptr);
   FWL_Error ConcatMatrix(const CFX_Matrix* matrix);
   FWL_Error ClearClip();
   FWL_Error ShowText(const CFX_PointF& point,
                      const CFX_WideString& text,
                      CFX_Matrix* matrix = nullptr);
-  FWL_Error CalcTextRect(CFX_RectF& rect,
-                         const CFX_WideString& text,
-                         FX_BOOL isMultiline = FALSE,
-                         CFX_Matrix* matrix = nullptr);
+  void CalcTextRect(CFX_RectF& rect,
+                    const CFX_WideString& text,
+                    FX_BOOL isMultiline = FALSE,
+                    CFX_Matrix* matrix = nullptr);
   FWL_Error Transfer(CFX_Graphics* graphics, const CFX_Matrix* matrix);
   FWL_Error Transfer(CFX_Graphics* graphics,
                      FX_FLOAT srcLeft,
                      FX_FLOAT srcTop,
                      const CFX_RectF& dstRect,
                      const CFX_Matrix* matrix);
 
   FWL_Error InverseRect(const CFX_RectF& rect);
   FWL_Error XorDIBitmap(const CFX_DIBitmap* srcBitmap, const CFX_RectF& rect);
   FWL_Error EqvDIBitmap(const CFX_DIBitmap* srcBitmap, const CFX_RectF& rect);
@@ skipping 51 matching lines @@
                          FXTEXT_CHARPOS* charPos,
                          CFX_RectF& rect);
 
   CFX_RenderDevice* m_renderDevice;
   CFX_ArrayTemplate<TInfo*> m_infoStack;
   std::unique_ptr<CAGG_Graphics> m_aggGraphics;
   friend class CAGG_Graphics;
 };
 
 #endif  // XFA_FXGRAPHICS_CFX_GRAPHICS_H_