Convert JsonWriter::Write to taking a const ref for the in-param

chrome/browser/extensions/api/developer_private/extension_info_generator_unittest.cc

 // Copyright 2015 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 "base/json/json_file_value_serializer.h"
 #include "base/json/json_writer.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/api/developer_private/extension_info_generator.h"
 #include "chrome/browser/extensions/api/developer_private/inspectable_views_finder.h"
@@ skipping 128 matching lines @@
 
     // Compare the outputs.
     // Ignore unknown fields in the actual output data.
     std::string paths_details = " - expected (" +
         expected_output_path.MaybeAsASCII() + ") vs. actual (" +
         extension_path.MaybeAsASCII() + ")";
     std::string expected_string;
     std::string actual_string;
     for (base::DictionaryValue::Iterator field(*expected_output_data);
          !field.IsAtEnd(); field.Advance()) {
-      const base::Value* expected_value = &field.value();
+      const base::Value& expected_value = field.value();
       base::Value* actual_value = nullptr;
       EXPECT_TRUE(actual_output_data->Get(field.key(), &actual_value)) <<
           field.key() + " is missing" + paths_details;
       if (!actual_value)
         continue;
-      if (!actual_value->Equals(expected_value)) {
+      if (!actual_value->Equals(&expected_value)) {
         base::JSONWriter::Write(expected_value, &expected_string);
-        base::JSONWriter::Write(actual_value, &actual_string);
+        base::JSONWriter::Write(*actual_value, &actual_string);
         EXPECT_EQ(expected_string, actual_string) <<
             field.key() << paths_details;
       }
     }
   }
 
  private:
   base::Closure quit_closure_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionInfoGeneratorUnitTest);
@@ skipping 229 matching lines @@
       "all_urls_II", ListBuilder().Append(kAllHostsPermission).Pass());
 
   // Even though the extension has all_urls permission, the checkbox shouldn't
   // show up without the switch.
   info = GenerateExtensionInfo(all_urls_extension->id());
   EXPECT_FALSE(info->run_on_all_urls.is_enabled);
   EXPECT_TRUE(info->run_on_all_urls.is_active);
 }
 
 }  // namespace extensions