Use std::unordered_map for CFDE_CSSStyleSheet::m_StringCache

xfa/fde/css/fde_cssdatatable.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_FDE_CSS_FDE_CSSDATATABLE_H_
 #define XFA_FDE_CSS_FDE_CSSDATATABLE_H_
 
 #include "core/fxcrt/include/fx_system.h"
@@ skipping 111 matching lines @@
 };
 
 #define FDE_CSSVALUETYPE_MaybeNumber 0x0100
 #define FDE_CSSVALUETYPE_MaybeEnum 0x0200
 #define FDE_CSSVALUETYPE_MaybeURI 0x0400
 #define FDE_CSSVALUETYPE_MaybeString 0x0800
 #define FDE_CSSVALUETYPE_MaybeColor 0x1000
 #define FDE_CSSVALUETYPE_MaybeFunction 0x2000
 #define FDE_IsOnlyValue(type, enum) \
   (((type) & ~(enum)) == FDE_CSSVALUETYPE_Primitive)
+
 struct FDE_CSSPROPERTYTABLE {
   FDE_CSSPROPERTY eName;
   const FX_WCHAR* pszName;
   uint32_t dwHash;
   uint32_t dwType;
 };
-typedef FDE_CSSPROPERTYTABLE const* FDE_LPCCSSPROPERTYTABLE;
 
-FDE_LPCCSSPROPERTYTABLE FDE_GetCSSPropertyByName(const CFX_WideStringC& wsName);
-FDE_LPCCSSPROPERTYTABLE FDE_GetCSSPropertyByEnum(FDE_CSSPROPERTY eName);
+const FDE_CSSPROPERTYTABLE* FDE_GetCSSPropertyByName(
+    const CFX_WideStringC& wsName);
+const FDE_CSSPROPERTYTABLE* FDE_GetCSSPropertyByEnum(FDE_CSSPROPERTY eName);
+
 struct FDE_CSSPROPERTYVALUETABLE {
   FDE_CSSPROPERTYVALUE eName;
   const FX_WCHAR* pszName;
   uint32_t dwHash;
 };
-typedef FDE_CSSPROPERTYVALUETABLE const* FDE_LPCCSSPROPERTYVALUETABLE;
 
-FDE_LPCCSSPROPERTYVALUETABLE FDE_GetCSSPropertyValueByName(
+const FDE_CSSPROPERTYVALUETABLE* FDE_GetCSSPropertyValueByName(
     const CFX_WideStringC& wsName);
-FDE_LPCCSSPROPERTYVALUETABLE FDE_GetCSSPropertyValueByEnum(
+const FDE_CSSPROPERTYVALUETABLE* FDE_GetCSSPropertyValueByEnum(
     FDE_CSSPROPERTYVALUE eName);
+
 struct FDE_CSSMEDIATYPETABLE {
   uint16_t wHash;
   uint16_t wValue;
 };
 typedef FDE_CSSMEDIATYPETABLE const* FDE_LPCCSSMEDIATYPETABLE;
 FDE_LPCCSSMEDIATYPETABLE FDE_GetCSSMediaTypeByName(
     const CFX_WideStringC& wsName);
 struct FDE_CSSLENGTHUNITTABLE {
   uint16_t wHash;
   uint16_t wValue;
@@ skipping 26 matching lines @@
                            int32_t& iLength);
 FX_BOOL FDE_ParseCSSColor(const FX_WCHAR* pszValue,
                           int32_t iValueLen,
                           FX_ARGB& dwColor);
 FX_BOOL FDE_ParseCSSURI(const FX_WCHAR* pszValue,
                         int32_t iValueLen,
                         int32_t& iOffset,
                         int32_t& iLength);
 
 #endif  // XFA_FDE_CSS_FDE_CSSDATATABLE_H_