Introduce pdfium::FakeUniquePtr for keys to sets of unique ptrs.

fpdfsdk/javascript/app.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 FPDFSDK_JAVASCRIPT_APP_H_
 #define FPDFSDK_JAVASCRIPT_APP_H_
 
-#include <map>
 #include <memory>
+#include <unordered_set>
 #include <vector>
 
 #include "fpdfsdk/javascript/JS_Define.h"
 
 class CJS_Runtime;
 class GlobalTimer;
 
 class TimerObj : public CJS_EmbedObj {
  public:
   TimerObj(CJS_Object* pJSObject);
@@ skipping 137 matching lines @@
   static CFX_WideString SysPathToPDFPath(const CFX_WideString& sOldPath);
 
  private:
   // CJS_EmbedObj
   void RunJsScript(CJS_Runtime* pRuntime, const CFX_WideString& wsScript);
 
   void ClearTimerCommon(CJS_Runtime* pRuntime, const CJS_Value& param);
 
   bool m_bCalculate;
   bool m_bRuntimeHighLight;
-  std::map<GlobalTimer*, std::unique_ptr<GlobalTimer>> m_Timers;
+  std::unordered_set<std::unique_ptr<GlobalTimer>> m_Timers;
 };
 
 class CJS_App : public CJS_Object {
  public:
   explicit CJS_App(v8::Local<v8::Object> pObject) : CJS_Object(pObject) {}
   ~CJS_App() override {}
 
   DECLARE_JS_CLASS();
 
   JS_STATIC_PROP(activeDocs, app);
@@ skipping 26 matching lines @@
   JS_STATIC_METHOD(openDoc, app);
   JS_STATIC_METHOD(openFDF, app);
   JS_STATIC_METHOD(popUpMenuEx, app);
   JS_STATIC_METHOD(popUpMenu, app);
   JS_STATIC_METHOD(response, app);
   JS_STATIC_METHOD(setInterval, app);
   JS_STATIC_METHOD(setTimeOut, app);
 };
 
 #endif  // FPDFSDK_JAVASCRIPT_APP_H_