Correct const accessors in base/values.(h|cc)

content/renderer/v8_value_converter_impl.cc

 // Copyright (c) 2012 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.
 
 #include "content/renderer/v8_value_converter_impl.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 135 matching lines @@
 
   return result;
 }
 
 v8::Handle<v8::Value> V8ValueConverterImpl::ToV8Object(
     const DictionaryValue* val) const {
   v8::Handle<v8::Object> result(v8::Object::New());
 
   for (DictionaryValue::key_iterator iter = val->begin_keys();
        iter != val->end_keys(); ++iter) {
-    Value* child = NULL;
+    const Value* child = NULL;
     CHECK(val->GetWithoutPathExpansion(*iter, &child));
 
     const std::string& key = *iter;
     v8::Handle<v8::Value> child_v8 = ToV8ValueImpl(child);
     CHECK(!child_v8.IsEmpty());
 
     v8::TryCatch try_catch;
     result->Set(v8::String::New(key.c_str(), key.length()), child_v8);
     if (try_catch.HasCaught()) {
       LOG(ERROR) << "Setter for property " << key.c_str() << " threw an "
@@ skipping 183 matching lines @@
     // We can avoid all bugs related to this by stripping null.
     if (strip_null_from_objects_ && child->IsType(Value::TYPE_NULL))
       continue;
 
     result->SetWithoutPathExpansion(std::string(*name_utf8, name_utf8.length()),
                                     child.release());
   }
 
   return result.release();
 }