remove some calls to to-be-deprecated v8::Value::To* functions

content/renderer/pepper/ppb_var_deprecated_impl.cc

Index: content/renderer/pepper/ppb_var_deprecated_impl.cc
diff --git a/content/renderer/pepper/ppb_var_deprecated_impl.cc b/content/renderer/pepper/ppb_var_deprecated_impl.cc
index c5a93e2f38960f4590c24a726b5bfe96625ebec2..589981cfb9c4ca82d7b31a32e0d9c4a03407730f 100644
--- a/content/renderer/pepper/ppb_var_deprecated_impl.cc
+++ b/content/renderer/pepper/ppb_var_deprecated_impl.cc
@@ -235,7 +235,8 @@ PP_Var CallDeprecatedInternal(PP_Var var,
   v8::Handle<v8::Object> recv =
       accessor.instance()->GetMainWorldContext()->Global();
   if (v8_method_name.As<v8::String>()->Length() != 0) {
-    function = function->Get(v8_method_name)->ToObject();
+    function = function->Get(v8_method_name)
+                   ->ToObject(accessor.instance()->GetIsolate());
     recv = accessor.GetObject();
   }