Remove FWL_WGTHITTEST_* defines in favour of enum class.

xfa/fwl/core/ifwl_widget.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_FWL_CORE_IFWL_WIDGET_H_
 #define XFA_FWL_CORE_IFWL_WIDGET_H_
 
 #include <memory>
@@ skipping 43 matching lines @@
   FWL_ERR ModifyStylesEx(uint32_t dwStylesExAdded, uint32_t dwStylesExRemoved);
   uint32_t GetStates();
   FWL_ERR SetStates(uint32_t dwStates, FX_BOOL bSet = TRUE);
   FWL_ERR SetPrivateData(void* module_id,
                          void* pData,
                          PD_CALLBACK_FREEDATA callback);
   void* GetPrivateData(void* module_id);
   FWL_ERR Update();
   FWL_ERR LockUpdate();
   FWL_ERR UnlockUpdate();
-  uint32_t HitTest(FX_FLOAT fx, FX_FLOAT fy);
+  FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy);
   FWL_ERR TransformTo(IFWL_Widget* pWidget, FX_FLOAT& fx, FX_FLOAT& fy);
   FWL_ERR TransformTo(IFWL_Widget* pWidget, CFX_RectF& rt);
   FWL_ERR GetMatrix(CFX_Matrix& matrix, FX_BOOL bGlobal = FALSE);
   FWL_ERR SetMatrix(const CFX_Matrix& matrix);
   FWL_ERR DrawWidget(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix = NULL);
   IFWL_ThemeProvider* GetThemeProvider();
   FWL_ERR SetThemeProvider(IFWL_ThemeProvider* pThemeProvider);
   FWL_ERR SetDataProvider(IFWL_DataProvider* pDataProvider);
   IFWL_WidgetDelegate* SetDelegate(IFWL_WidgetDelegate* pDelegate);
   IFWL_App* GetOwnerApp() const;
@@ skipping 11 matching lines @@
 
  protected:
   // Takes ownership of |pImpl|.
   void SetImpl(CFWL_WidgetImp* pImpl) { m_pImpl.reset(pImpl); }
 
  private:
   std::unique_ptr<CFWL_WidgetImp> m_pImpl;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_WIDGET_H_