PPAPI: Make V8VarConverter longer-lived

content/renderer/pepper/v8_var_converter.h

 // Copyright (c) 2013 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_RENDERER_PEPPER_V8_VAR_CONVERTER_H
 #define CONTENT_RENDERER_PEPPER_V8_VAR_CONVERTER_H
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/shared_impl/scoped_pp_var.h"
 #include "v8/include/v8.h"
 #include "content/common/content_export.h"
 
 namespace content {
 
 class ResourceConverter;
 
 class CONTENT_EXPORT V8VarConverter {
  public:
   // Whether or not to allow converting object vars. If they are not allowed
   // and they are passed in, conversion will fail.
   enum AllowObjectVars {
     kDisallowObjectVars,
     kAllowObjectVars
   };
-  explicit V8VarConverter(PP_Instance instance);
   V8VarConverter(PP_Instance instance, AllowObjectVars object_vars_allowed);
 
   // Constructor for testing.
   V8VarConverter(PP_Instance instance,
                  scoped_ptr<ResourceConverter> resource_converter);
   ~V8VarConverter();
 
   // Converts the given PP_Var to a v8::Value. True is returned upon success.
   bool ToV8Value(const PP_Var& var,
                  v8::Handle<v8::Context> context,
@@ skipping 36 matching lines @@
   // Returns true on success, false on failure.
   bool FromV8ValueInternal(v8::Handle<v8::Value> val,
                            v8::Handle<v8::Context> context,
                            ppapi::ScopedPPVar* result_var);
 
   PP_Instance instance_;
 
   // Whether or not to support conversion to PP_VARTYPE_OBJECT.
   AllowObjectVars object_vars_allowed_;
 
-  // The message loop to run the callback to |FromV8Value| from.
-  scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
-
   // The converter to use for converting V8 vars to resources.
   scoped_ptr<ResourceConverter> resource_converter_;
 
   DISALLOW_COPY_AND_ASSIGN(V8VarConverter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_V8_VAR_CONVERTER_H