Add ContainsKey() and ContainsValue() and use them where appropriate.

fpdfsdk/src/javascript/JS_Runtime.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 "JS_Runtime.h"
 
 #include "Consts.h"
 #include "Document.h"
 #include "Field.h"
 #include "Icon.h"
 #include "JS_Context.h"
 #include "JS_Define.h"
 #include "JS_EventHandler.h"
 #include "JS_GlobalData.h"
 #include "JS_Object.h"
 #include "JS_Value.h"
 #include "PublicMethods.h"
 #include "app.h"
 #include "color.h"
 #include "console.h"
 #include "event.h"
 #include "fpdfsdk/include/fsdk_mgr.h"  // For CPDFDoc_Environment.
 #include "fpdfsdk/include/javascript/IJavaScript.h"
 #include "global.h"
 #include "report.h"
 #include "util.h"
+#include "third_party/base/stl_util.h"
 
 // static
 void IJS_Runtime::Initialize(unsigned int slot, void* isolate) {
   FXJS_Initialize(slot, reinterpret_cast<v8::Isolate*>(isolate));
 }
 
 // static
 IJS_Runtime* IJS_Runtime::Create(CPDFDoc_Environment* pEnv) {
   return new CJS_Runtime(pEnv);
 }
@@ skipping 160 matching lines @@
 
 void CJS_Runtime::RemoveEventFromSet(const FieldEvent& event) {
   m_FieldEventSet.erase(event);
 }
 
 v8::Local<v8::Context> CJS_Runtime::NewJSContext() {
   return v8::Local<v8::Context>::New(m_isolate, m_context);
 }
 
 void CJS_Runtime::AddObserver(Observer* observer) {
-  ASSERT(m_observers.find(observer) == m_observers.end());
+  ASSERT(!pdfium::ContainsKey(m_observers, observer));
   m_observers.insert(observer);
 }
 
 void CJS_Runtime::RemoveObserver(Observer* observer) {
-  ASSERT(m_observers.find(observer) != m_observers.end());
+  ASSERT(pdfium::ContainsKey(m_observers, observer));
   m_observers.erase(observer);
 }