Use smart pointers for class owned pointers

fpdfsdk/javascript/cjs_context.cpp

 // 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
 
 #include "fpdfsdk/javascript/cjs_context.h"
 
 #include "fpdfsdk/javascript/JS_EventHandler.h"
 #include "fpdfsdk/javascript/cjs_runtime.h"
 #include "fpdfsdk/javascript/resource.h"
 
 CJS_Context::CJS_Context(CJS_Runtime* pRuntime)
-    : m_pRuntime(pRuntime), m_bBusy(FALSE) {
-  m_pEventHandler = new CJS_EventHandler(this);
-}
+    : m_pRuntime(pRuntime),
+      m_pEventHandler(new CJS_EventHandler(this)),
+      m_bBusy(FALSE) {}
 
-CJS_Context::~CJS_Context() {
-  delete m_pEventHandler;
-}
+CJS_Context::~CJS_Context() {}
 
 CPDFSDK_Document* CJS_Context::GetReaderDocument() {
   return m_pRuntime->GetReaderDocument();
 }
 
 CPDFDoc_Environment* CJS_Context::GetReaderApp() {
   return m_pRuntime->GetReaderApp();
 }
 
 FX_BOOL CJS_Context::RunScript(const CFX_WideString& script,
@@ skipping 238 matching lines @@
 }
 
 void CJS_Context::OnBatchExec(CPDFSDK_Document* pTarget) {
   m_pEventHandler->OnBatchExec(pTarget);
 }
 
 void CJS_Context::OnMenu_Exec(CPDFSDK_Document* pTarget,
                               const CFX_WideString& strTargetName) {
   m_pEventHandler->OnMenu_Exec(pTarget, strTargetName);
 }