Enable extension APIs for content scripts.

content/public/renderer/v8_value_converter.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_RENDERER_V8_VALUE_CONVERTER_H_
 #define CONTENT_PUBLIC_RENDERER_V8_VALUE_CONVERTER_H_
 
 #include "content/common/content_export.h"
 #include "v8/include/v8.h"
 
@@ skipping 12 matching lines @@
 class CONTENT_EXPORT V8ValueConverter {
  public:
   static V8ValueConverter* create();
 
   virtual ~V8ValueConverter() {}
 
   // Converts Value to v8::Value. Unsupported types are replaced with null.
   // If an array or object throws while setting a value, that property or item
   // is skipped, leaving a hole in the case of arrays.
   virtual v8::Handle<v8::Value> ToV8Value(
-      base::Value* value,
+      const base::Value* value,
       v8::Handle<v8::Context> context) const = 0;
 
   // Converts v8::Value to Value. Unsupported types are replaced with null.
   // If an array or object throws while getting a value, that property or item
   // is replaced with null.
   virtual base::Value* FromV8Value(v8::Handle<v8::Value> value,
                                    v8::Handle<v8::Context> context) const = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_V8_VALUE_CONVERTER_H_