Convert CFXJSE_Value::ToString to return.

xfa/fxjse/value.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 XFA_FXJSE_VALUE_H_
 #define XFA_FXJSE_VALUE_H_
 
 #include "xfa/fxjse/scope_inline.h"
@@ skipping 154 matching lines @@
         v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
     return static_cast<double>(hValue->NumberValue());
   }
   V8_INLINE int32_t ToInteger() const {
     ASSERT(!m_hValue.IsEmpty());
     CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate);
     v8::Local<v8::Value> hValue =
         v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
     return static_cast<int32_t>(hValue->NumberValue());
   }
-  V8_INLINE void ToString(CFX_ByteString& szStrOutput) const {
+  V8_INLINE CFX_ByteString ToString() const {
     ASSERT(!m_hValue.IsEmpty());
     CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate);
     v8::Local<v8::Value> hValue =
         v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
     v8::Local<v8::String> hString = hValue->ToString();
     v8::String::Utf8Value hStringVal(hString);
-    szStrOutput = *hStringVal;
+    return CFX_ByteString(*hStringVal);
+  }
+  V8_INLINE CFX_WideString ToWideString() const {
+    return CFX_WideString::FromUTF8(ToString().AsStringC());
   }
   CFXJSE_HostObject* ToHostObject(CFXJSE_Class* lpClass) const;
 
   V8_INLINE void SetUndefined() {
     CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
     v8::Local<v8::Value> hValue = v8::Undefined(m_pIsolate);
     m_hValue.Reset(m_pIsolate, hValue);
   }
   V8_INLINE void SetNull() {
     CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
@@ skipping 79 matching lines @@
 
   CFXJSE_Value();
   CFXJSE_Value(const CFXJSE_Value&);
   CFXJSE_Value& operator=(const CFXJSE_Value&);
 
   v8::Isolate* m_pIsolate;
   v8::Global<v8::Value> m_hValue;
 };
 
 #endif  // XFA_FXJSE_VALUE_H_