From db152695e49c24083874a5e3639a5f967b69b0f3 Mon Sep 17 00:00:00 2001
From: tsepez <tsepez@chromium.org>
Date: Fri, 15 Apr 2016 14:44:20 -0700
Subject: Remove unused IFDE_CSSStyleSheetCache/CFDE_CSSStyleSheetCache.

Review URL: https://codereview.chromium.org/1896553004
---
 xfa/fde/css/fde_css.h        | 13 --------
 xfa/fde/css/fde_csscache.cpp | 78 --------------------------------------------
 xfa/fde/css/fde_csscache.h   | 24 --------------
 3 files changed, 115 deletions(-)

diff --git a/xfa/fde/css/fde_css.h b/xfa/fde/css/fde_css.h
index f1a8ee93c9..566a94710c 100644
--- a/xfa/fde/css/fde_css.h
+++ b/xfa/fde/css/fde_css.h
@@ -23,7 +23,6 @@ class IFDE_CSSRule;
 class IFDE_CSSSelector;
 class IFDE_CSSStyleSelector;
 class IFDE_CSSStyleSheet;
-class IFDE_CSSStyleSheetCache;
 class IFDE_CSSSyntaxParser;
 class IFDE_CSSTagProvider;
 class IFDE_CSSValue;
@@ -453,18 +452,6 @@ class IFDE_CSSStyleSheet : public IFX_Unknown {
 };
 typedef CFX_ArrayTemplate<IFDE_CSSStyleSheet*> CFDE_CSSStyleSheetArray;
 
-class IFDE_CSSStyleSheetCache {
- public:
-  static IFDE_CSSStyleSheetCache* Create();
-  virtual ~IFDE_CSSStyleSheetCache() {}
-  virtual void Release() = 0;
-  virtual void SetMaxItems(int32_t iMaxCount = 5) = 0;
-  virtual void AddStyleSheet(const CFX_ByteStringC& szKey,
-                             IFDE_CSSStyleSheet* pStyleSheet) = 0;
-  virtual IFDE_CSSStyleSheet* GetStyleSheet(
-      const CFX_ByteStringC& szKey) const = 0;
-  virtual void RemoveStyleSheet(const CFX_ByteStringC& szKey) = 0;
-};
 enum FDE_CSSSYNTAXSTATUS {
   FDE_CSSSYNTAXSTATUS_Error,
   FDE_CSSSYNTAXSTATUS_EOS,
diff --git a/xfa/fde/css/fde_csscache.cpp b/xfa/fde/css/fde_csscache.cpp
index c68d4ddb49..511c69798b 100644
--- a/xfa/fde/css/fde_csscache.cpp
+++ b/xfa/fde/css/fde_csscache.cpp
@@ -18,85 +18,7 @@ FDE_CSSCacheItem::FDE_CSSCacheItem(IFDE_CSSStyleSheet* p)
 FDE_CSSCacheItem::~FDE_CSSCacheItem() {
   pStylesheet->Release();
 }
-IFDE_CSSStyleSheetCache* IFDE_CSSStyleSheetCache::Create() {
-  return new CFDE_CSSStyleSheetCache;
-}
-
-CFDE_CSSStyleSheetCache::CFDE_CSSStyleSheetCache()
-    : m_pFixedStore(NULL), m_iMaxItems(5) {}
 
-CFDE_CSSStyleSheetCache::~CFDE_CSSStyleSheetCache() {
-  for (const auto& pair : m_Stylesheets) {
-    FXTARGET_DeleteWith(FDE_CSSCacheItem, m_pFixedStore, pair.second);
-  }
-  m_Stylesheets.clear();
-  if (m_pFixedStore) {
-    m_pFixedStore->Release();
-  }
-}
-void CFDE_CSSStyleSheetCache::AddStyleSheet(const CFX_ByteStringC& szKey,
-                                            IFDE_CSSStyleSheet* pStyleSheet) {
-  FXSYS_assert(pStyleSheet != NULL);
-  if (m_pFixedStore == NULL) {
-    m_pFixedStore =
-        FX_CreateAllocator(FX_ALLOCTYPE_Fixed, std::max(10, m_iMaxItems),
-                           sizeof(FDE_CSSCacheItem));
-    FXSYS_assert(m_pFixedStore != NULL);
-  }
-  auto it = m_Stylesheets.find(szKey);
-  if (it != m_Stylesheets.end()) {
-    FDE_CSSCacheItem* pItem = it->second;
-    if (pItem->pStylesheet != pStyleSheet) {
-      pItem->pStylesheet->Release();
-      pItem->pStylesheet = pStyleSheet;
-      pItem->pStylesheet->AddRef();
-      pItem->dwActivity = 0;
-    }
-  } else {
-    while (static_cast<int32_t>(m_Stylesheets.size()) >= m_iMaxItems) {
-      RemoveLowestActivityItem();
-    }
-    m_Stylesheets[szKey] =
-        FXTARGET_NewWith(m_pFixedStore) FDE_CSSCacheItem(pStyleSheet);
-  }
-}
-IFDE_CSSStyleSheet* CFDE_CSSStyleSheetCache::GetStyleSheet(
-    const CFX_ByteStringC& szKey) const {
-  auto it = m_Stylesheets.find(szKey);
-  if (it == m_Stylesheets.end()) {
-    return nullptr;
-  }
-  FDE_CSSCacheItem* pItem = it->second;
-  pItem->dwActivity++;
-  pItem->pStylesheet->AddRef();
-  return pItem->pStylesheet;
-}
-void CFDE_CSSStyleSheetCache::RemoveStyleSheet(const CFX_ByteStringC& szKey) {
-  auto it = m_Stylesheets.find(szKey);
-  if (it == m_Stylesheets.end()) {
-    return;
-  }
-  FXTARGET_DeleteWith(FDE_CSSCacheItem, m_pFixedStore, it->second);
-  m_Stylesheets.erase(it);
-}
-void CFDE_CSSStyleSheetCache::RemoveLowestActivityItem() {
-  auto found = m_Stylesheets.end();
-  for (auto it = m_Stylesheets.begin(); it != m_Stylesheets.end(); ++it) {
-    switch (it->first.GetID()) {
-      case FXBSTR_ID('#', 'U', 'S', 'E'):
-      case FXBSTR_ID('#', 'A', 'G', 'E'):
-        continue;
-    }
-    if (found == m_Stylesheets.end() ||
-        it->second->dwActivity > found->second->dwActivity) {
-      found = it;
-    }
-  }
-  if (found != m_Stylesheets.end()) {
-    FXTARGET_DeleteWith(FDE_CSSCacheItem, m_pFixedStore, found->second);
-    m_Stylesheets.erase(found);
-  }
-}
 FDE_CSSTagCache::FDE_CSSTagCache(FDE_CSSTagCache* parent,
                                  IFDE_CSSTagProvider* tag)
     : pTag(tag),
diff --git a/xfa/fde/css/fde_csscache.h b/xfa/fde/css/fde_csscache.h
index 7d1ace8ac1..41908c1c6c 100644
--- a/xfa/fde/css/fde_csscache.h
+++ b/xfa/fde/css/fde_csscache.h
@@ -21,30 +21,6 @@ class FDE_CSSCacheItem : public CFX_Target {
   uint32_t dwActivity;
 };
 
-class CFDE_CSSStyleSheetCache : public IFDE_CSSStyleSheetCache,
-                                public CFX_Target {
- public:
-  CFDE_CSSStyleSheetCache();
-  ~CFDE_CSSStyleSheetCache();
-  virtual void Release() { delete this; }
-
-  virtual void SetMaxItems(int32_t iMaxCount = 5) {
-    FXSYS_assert(iMaxCount >= 3);
-    m_iMaxItems = iMaxCount;
-  }
-
-  virtual void AddStyleSheet(const CFX_ByteStringC& szKey,
-                             IFDE_CSSStyleSheet* pStyleSheet);
-  virtual IFDE_CSSStyleSheet* GetStyleSheet(const CFX_ByteStringC& szKey) const;
-  virtual void RemoveStyleSheet(const CFX_ByteStringC& szKey);
-
- protected:
-  void RemoveLowestActivityItem();
-  std::map<CFX_ByteString, FDE_CSSCacheItem*> m_Stylesheets;
-  IFX_MEMAllocator* m_pFixedStore;
-  int32_t m_iMaxItems;
-};
-
 class FDE_CSSTagCache : public CFX_Target {
  public:
   FDE_CSSTagCache(FDE_CSSTagCache* parent, IFDE_CSSTagProvider* tag);
-- 
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