Wean CJS_Value off of v8::Isolate.

fpdfsdk/src/javascript/JS_Runtime.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_SRC_JAVASCRIPT_JS_RUNTIME_H_
 #define FPDFSDK_SRC_JAVASCRIPT_JS_RUNTIME_H_
 
 #include <set>
@@ skipping 11 matching lines @@
   class Observer {
    public:
     virtual void OnDestroyed() = 0;
 
    protected:
     virtual ~Observer() {}
   };
 
   using FieldEvent = std::pair<CFX_WideString, JS_EVENT_T>;
 
+  static CJS_Runtime* FromContext(const IJS_Context* cc);
+
   explicit CJS_Runtime(CPDFDoc_Environment* pApp);
   ~CJS_Runtime() override;
 
   // IJS_Runtime
   IJS_Context* NewContext() override;
   void ReleaseContext(IJS_Context* pContext) override;
   IJS_Context* GetCurrentContext() override;
   void SetReaderDocument(CPDFSDK_Document* pReaderDoc) override;
   CPDFSDK_Document* GetReaderDocument() override { return m_pDocument; }
 
@@ skipping 21 matching lines @@
   CPDFSDK_Document* m_pDocument;
   FX_BOOL m_bBlocking;
   std::set<FieldEvent> m_FieldEventSet;
   v8::Isolate* m_isolate;
   bool m_isolateManaged;
   v8::Global<v8::Context> m_context;
   std::set<Observer*> m_observers;
 };
 
 #endif  // FPDFSDK_SRC_JAVASCRIPT_JS_RUNTIME_H_