Make code compile with clang_use_chrome_plugin (part V)

xfa/fxfa/app/xfa_fwltheme.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.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FXFA_APP_XFA_FWLTHEME_H_
 #define XFA_FXFA_APP_XFA_FWLTHEME_H_
 
 #include <memory>
@@ skipping 24 matching lines @@
   uint32_t GetHashCode() const { return 0; }
   FWL_Error Initialize();
   FWL_Error Finalize();
 
   // IFWL_ThemeProvider:
   bool IsValidWidget(IFWL_Widget* pWidget) override;
   uint32_t GetThemeID(IFWL_Widget* pWidget) override;
   uint32_t SetThemeID(IFWL_Widget* pWidget,
                       uint32_t dwThemeID,
                       FX_BOOL bChildren = TRUE) override;
-  FWL_Error GetThemeMatrix(IFWL_Widget* pWidget, CFX_Matrix& matrix) override {
-    return FWL_Error::Succeeded;
-  }
+  FWL_Error GetThemeMatrix(IFWL_Widget* pWidget, CFX_Matrix& matrix) override;
   FWL_Error SetThemeMatrix(IFWL_Widget* pWidget,
-                           const CFX_Matrix& matrix) override {
-    return FWL_Error::Succeeded;
-  }
+                           const CFX_Matrix& matrix) override;
   FX_BOOL DrawBackground(CFWL_ThemeBackground* pParams) override;
   FX_BOOL DrawText(CFWL_ThemeText* pParams) override;
   void* GetCapacity(CFWL_ThemePart* pThemePart,
                     CFWL_WidgetCapacity dwCapacity) override;
   FX_BOOL IsCustomizedLayout(IFWL_Widget* pWidget) override;
-  FWL_Error GetPartRect(CFWL_ThemePart* pThemePart,
-                        CFX_RectF& rtPart) override {
-    return FWL_Error::Succeeded;
-  }
+  FWL_Error GetPartRect(CFWL_ThemePart* pThemePart, CFX_RectF& rtPart) override;
   FX_BOOL IsInPart(CFWL_ThemePart* pThemePart,
                    FX_FLOAT fx,
                    FX_FLOAT fy) override;
   FX_BOOL CalcTextRect(CFWL_ThemeText* pParams, CFX_RectF& rect) override;
 
   FWL_Error GetPartRect(CFWL_ThemePart* pThemePart);
 
  protected:
   CFWL_WidgetTP* GetTheme(IFWL_Widget* pWidget);
   CFWL_CheckBoxTP* m_pCheckBoxTP;
@@ skipping 12 matching lines @@
   uint32_t m_dwCapacity;
   CFGAS_GEFont* m_pCalendarFont;
   CFX_WideString m_wsResource;
   CXFA_FFApp* m_pApp;
   CFX_RectF m_Rect;
   CFX_SizeF m_SizeAboveBelow;
 };
 class CXFA_FWLCheckBoxTP : public CFWL_CheckBoxTP {
  public:
   CXFA_FWLCheckBoxTP();
-  virtual FX_BOOL DrawBackground(CFWL_ThemeBackground* pParams);
+
+  // CFWL_CheckBoxTP
+  FX_BOOL DrawBackground(CFWL_ThemeBackground* pParams) override;
 
  protected:
   void DrawCheckSign(IFWL_Widget* pWidget,
                      CFX_Graphics* pGraphics,
                      const CFX_RectF* pRtBox,
                      int32_t iState,
                      CFX_Matrix* pMatrix);
 };
 class CXFA_FWLEditTP : public CFWL_EditTP {
  public:
   CXFA_FWLEditTP();
-  virtual ~CXFA_FWLEditTP();
+  ~CXFA_FWLEditTP() override;
 
- public:
-  virtual FX_BOOL DrawBackground(CFWL_ThemeBackground* pParams);
+  // CFWL_EditTP
+  FX_BOOL DrawBackground(CFWL_ThemeBackground* pParams) override;
 };
 
 #endif  // XFA_FXFA_APP_XFA_FWLTHEME_H_